Product Name: Diamond Drilling Core Bits Sets Hole Saw for Marble Granite Quantity: 11pcs/kit Kit Contains:9pcs 6/6/8/20/25/35/45/50/65mm drill bits;1pc Chamfer Bit;1pc Carbide Drill Bit Specification: Diamond core bits: Diameter 6/8/10/20/25/35/45/50/65mm;Triangle Shank;total length 65mm; diamond height 10mm; Diamond Chamfer bit:Diameter 50mm;total length 70.5mm Carbide Drill Bit: Diameter 6mm;total length 68mm Feature: U-groove tooth shape---More sharp, improves product performance and facilitates the discharge of debris Easy carrying---Handle aluminum box packaging Vacuum brazed technology provides longer working life, Fast and smooth drilling Triangle Shank Design---Shank diameter 10mm, stable clamping and easy drilling. Ref. Brand: This product is marked our "DT-DIATOOL" brand name. If you need these diamond disc without our brand, please leave us message. we could send you products without brand. We also provide brand-customizing service (If you order more 20pcs, we could mark your brand name on these products). Note: Please allow 1-3mm errors due to manual measurement Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same