15mm 60° Sintered Diamond Countersink Drill Bit, 5pcs – 8mm Shank, 1.2mm Pilot Tip for Granite, Tile & Glass

The 15mm 60° Sintered Diamond Countersink Drill Bit, 5pcs is an industrial-grade, long-lasting hole chamfering and beveling tool engineered for granite, marble, tile, glass, and hard ceramics. Built with solid sintered diamond matrix and an integrated 1.2mm pilot tip on a heavy-duty 8mm shank, this 5-piece set ensures true centering and exceptional wear resistance throughout its full depth.

• Cutting Width: 15mm
• Cone Angle: 60°
• Pilot Tip Diameter: 1.2mm for precise hole centering
• Shank Diameter: 8mm heavy-duty drill / rotary shank
• Quantity: 5-Pack (5 pieces)
• Bond Type: Sintered diamond matrix (diamond impregnated throughout)
• Applications: Heavy-duty edge chamfering, hole deburring, and countersinking on granite, porcelain tile, quartz, glass, and ceramics

Mandatory use of water or coolant during drilling to prevent thermal shock and maximize tool life.