Product Description Masonry core drill bit is an ideal diamond tool for making holes on brick, granite, marble, and other stones. It is widely used in countertops, walls, and other projects. For our short core drill bit (wet drilling), the diameter is usually from φ6mm to φ120mm, and the segment types can be solid type, crown type, and segmented type. According to your drilling projects, the length of the stone core drill bit can be customized, and it is usually 60mm. The connection can be G1/2", 5/8"-11, M14 and shank. Please check our masonry core drill bit list as follows: Different types of diamond formulas fit different materials. Sunny Superhard Tools can provide you with the proper diamond formula to fit your material and boost the drilling project. We use high-quality artificial diamonds. Some of them are imported from Ireland Brand -"Element Six", to guarantee the high performance of our stone core drill bits. Drilling smoothly & steadily for different stones and bricks. The diameter and working length can be customized upon your requests. High-quality artificial diamonds are used to ensure high performance. Good packaging and fast delivery. Optional Size of diamond core bit (other specifications are available upon request) OUTER DIA. DRILL DEPTH Connection Type Segment Type Segment Height mm mm mm Φ6 50 G1/2", 5/8"-11, M14, shank  Solid 10 Φ8 60  Solid 10 Φ10 60  Solid 10 Φ12 60  Solid 10 Φ14 60  Solid 10 Φ16 60  Solid 10 φ18 60  Solid 10 φ20 60 G1/2", 5/8"-11, M14  Crown 10 φ25 60  Crown 10 φ30 60  Crown 10 φ35 60  Crown 10 φ40 60  Segmented  10 φ45 60   Segmented  10 φ50 60   Segmented  10 φ55  60   Segmented  10 φ60  60   Segmented  10 φ65  60   Segmented  10 φ70  60   Segmented  10 φ75  60   Segmented  10 φ100  60   Segmented  10 φ120  60   Segmented  10 Other specifications can be customized upon your requests. QUICK LINK ▼ Specifications Name 30mm Crown Type Masonry Core Drill Bit For Granite Marble Stones Application For wet drilling granite, marble and other stones Welding Type High-frequency welding Outer Diameter 30mm Working Length 60mm Segment Type Crown Type Connection M14 Net Weight 0.21kg Packing 5 pieces per box Payment Terms T/T, Western Union, Paypal, Wechat, Credit Card, Cash, L/C Place of Origin Quanzhou, Fujian, China Shipping Port Xiamen Port (other ports are available) Back to Quick Link Packing of Small & Short Diamond Core Drill Bits Back to Quick Link Customer Testimonials What our customers are saying of our diamond tools... Hi Miley- yes we didi test them this weekend. The concrete we were grinding this weekend was super hard and the diamond segments held up pretty good. We had to add more weights to our machine mostly do to the large surface on the segments that's why we went to the new ones you guys just shipped out.I will leave a good review on your website.Thank you.Customer from United States Dear Alvin, We have stoc from our old supplier but we tried all your tools. They look really great and our first impression is that your tools are perfect. We will see what will happened on long run but as I see your tools they are great.We will look also to some other products from your range and we will prepare another little order this days. technically all the tools look great. ThanksCustomer from Turkey Hi Jane i recieved the blades and we tested them out today and they are the best we have ever used in our 25 years in the concrete sawing businesCustomer from Australia Привет мой друг Вот такая красота получилась, при работе вашим расходникомметалл/резинки!Customer from Russia Hello! We tested the #16-20 grit diamond tools, and they work excellent!! I would like to order some more tools, 6×12 pieces=72 pieces more (SYF-B02 shape) Could you please send me a proforma invoice, so I can pay it in advance, Thank You! Best wishies,Customer from New Zealand Why Choose Sunny Superhard Tools? Reliable quality, competitive price, quick response, fast dlivery, OEM/ODM service and more. Reliable Quality As a professional and experienced diamond manufacturer since 1993, Sunny Superhard Tools insisted on providing the best quality of diamond tools to our customers. Fast Delivery Fast delivery is very important for recovering the investment. Sunny Superhard Tools provide fast delivery service to benefit our customers. Small orders can be delivered within 7-15 days. Competitive Price Sunny Superhard Tools is continuously finding different ways to reduce the price without sacrificing the quality, and make our diamond tools competitive when compared with others. OEM/ODM is Available In the past few decades, Sunny Superhard Tools has made many orders of the OEM/ODM successfully. Some of the OEM/ODM services are free of charge! Quick Response Our teams is professional and the members have good study of the diamond tools. We offer quick response. Each messege or email will be replied within 24 hours. Flexible Payment Terms There are lots of different payment ways supported by Sunny Superhard Tools:T/T, Westunion, Paypal, Wechat, and Cash. For big orders, L/C can also be considered Back to Quick Link Frequently Asked Questions Which type of bush hammer scratching roller should I choose, Carbide or PCD? For the bush hammer scratching roller, we have designed two different types: one is the carbide type, and the other is the PCD type. Here is the guide to choose the right scratching roller: 1. For scratching soft stones(such as marble), please choose carbide type. Why? Because the hardness of carbide teeth is not such high for scratching hard stones, but it is enough for scratching soft stones.  Besides, the carbide teeth are much more competitive compared with PCDs. 2. For scratching hard stones(such as granite), please choose the PCD type. Why? Because the PCD has a very strong hardness, wear-resistance, and it works well on the hard stones. It can also be used for soft stones. But in that case, it's not economical. Are you a trading company or a manufacturer of diamond tools? Yes, Quanzhou Sunny Superhard Tools Co., Ltd was established in 1993, and we are a professional and experienced diamond tools manufacturer in China. Compared with traders, we have the following advantages: 1. The quality of diamond tools is guaranteed. Sunny Superhard Tools uses high-quality materials and advanced production technology, as well as the strict inspection system to ensure the high & stable quality of our diamond tools. While for other diamond tools trade companies, the quality of diamond tools maybe not stable, as they some times will deliver you the same diamond tools but from different suppliers. 2. Much more competitive price. Our diamond tools are much more competitive than the trading companies. Because we sell our products directly to our customers, but the trading companies will take extra profit. What's more, for our agencies, we offer unexpected price to make win-win cooperation and establish a long term business relationship. 3. Faster delivery. Fast delivery is also very important for buyers. For end-users, it means that they can use diamond tools as early as possible. For resellers, it means that they can sell the diamond tools and recover their investment as soon as possible. Unlike the trading company, the manufacturer doesn't need to communicate with other suppliers to make orders again. We can place the production order immediately and make & delivery your diamond tools as fast as possible. 4. OEM/ODM services are welcome. As an experienced diamond tools manufacturer since 1993, we have received lots of different customized diamond tools order from customers all around the world, such as the very long diamond core drill bit, the bush hammer plate, the diamond grinding shoes, the diamond segment, the diamond saw blade, and etc. The professional R&D department makes it easy to OEM/ODM diamond tools. While for trading companies, they are more likely to accept the standard diamond tools, and OEM/ODM service is usually unavailable. 5. Small orders are available. For Sunny Superhard Tools, end-users of diamond tools are also very important. Because end-users can give us feedback about our diamond tools and this information is very important for us to improve our diamond tools in the future. We're always listening to our customers' suggestions, collect the data of our diamond tools, and keeping developing better diamond tools. 6. Our sales are much more professional in diamond tools than trading companies. For Sunny Superhard Tools, all of our products are diamond tools or related machines, while trading companies maybe have many different types of cross-industry products. We are more professional and can help you to find the ideal diamond tools for your market(for resellers) or project(for end-users). Why your diamond tools are much competitive compared to other suppliers? Do you sacrifice the quality? No, we definitely won't sacrifice the quality to make a lower price. There are some ways we do to make much more competitive diamond tools: 1. To increase the productivity of our diamond tools, such as optimizing the production flow of diamond grinding pucks as follows: 2. To find the right suppliers of product materials 3. To find good agents for lower shipping fees 4. To reduce other unnecessary costs What's the lead time of diamond tools? The lead time is different for different orders. For small orders, the lead time is only about 7-15 days. For medium and big orders, our sales will confirm with you about the lead time when the order is confirmed. The fast delivery is one of our advantages, and Sunny Superhard Tools delivers diamond tools faster than most companies. What payment terms can you accept? Sunny Superhard Tools provides flexible payment methods to our customers, including the following payment ways: 1. T/T, 100% in advance. 2. Western Union 3. Paypal 4. Wechat 5. Trade Insurance order on Alibaba (Support credit card). 6. Cash Note: Generally, we accept the currency of USD/RMB only. Back to Quick Link Download Our Latest Diamond Core Drill Bit Catalogs Want more types of diamond core drill bits? Download our latest catalogues... Download Back to Quick Link