22mm Countersink Radiused Slotting Sintered Diamond Drill Bit, 5pcs – 6mm Shank for Stone, Glass & Ceramic

The 22mm Countersink Radiused Slotting Sintered Diamond Drill Bit, 5pcs is a durable, heavy-duty hole beveling and radiused slot-cutting tool engineered for stone, glass, porcelain, and ceramics. Impregnated with industrial-grade diamond throughout its sintered matrix on a 6mm shank, this 5-piece set delivers exceptional tool longevity, clean edge countersinking, and smooth slot formation.

• Head Diameter: 22mm
• Profile: Radiused Countersink / Slotting
• Shank Diameter: 6mm standard drill / rotary shank
• Quantity: 5-Pack (5 pieces)
• Bond Type: Sintered diamond matrix
• Applications: Hole deburring, edge beveling, countersinking, and radiused slotting on granite, marble, quartz, porcelain tile, glass, and ceramics

Mandatory use of water or coolant during drilling to prevent overheating and ensure maximum service life.