10Pcs Diamond Drill Bit Silver Hollow Core Drill Bit Set for Ceramic, Glass, Porcelain Tile Diamond Hole Saw Tile Set Glass Drill Bit Carbide 4mm 5mm 6mm 8mm 10mm 12mm 14mm 16mm 18mm 28mm

• 【10 Sizes WanFengXue Diamond Drill Bit】4mm、5mm、6mm、8mm、10mm 12mm、14mm、16mm、18mm、28mm. Satisfy most of your different needs. Color: Silver.
• 【Smooth Cut】When working, apply water to the cutting part and work carefully. When using a glass drill, high-speed rotation generates high heat.
• 【Operation】Start the hole diagonally, circularly knit, then hold the drill straight. Water is required for lubrication during drilling.
• 【High-speed Rotary Cutting】There is a hole for exhaust heat, but start drilling at a low speed so as not to burn out.
• 【Uses】Attach to electric drills, rechargeable drivers, and drilling machines to drill glass, tiles, marble, granite, etc. If you have this, you can fully utilize it for hobbies and DIY work. When working, please work carefully while applying water to the cutting part.

There is a hole for exhaust heat, but start drilling at a low speed so as not to burn out.