Diamond Coated Twist Drill #40

Experience precision with the Diamond Coated Twist Drill #40, a high-speed twist drill featuring a diamond coating on the tips to drill stone, ceramics, glass, and other hard non-metallic materials.

Built from superior high-grade steel, this medium-fine grit drill combines durability with exceptional cutting efficiency. Note: the drill size indicated is the pre-coating diameter.

• Diamond-coated tip delivers faster, cleaner holes in stone, ceramics, glass, and other hard non-metallic materials—reducing breakout and extending bit life.
• Medium-fine grit offers controlled drilling for precise holes on delicate surfaces while resisting wear.
• High-speed steel core ensures durability under tough drilling tasks and provides consistent performance.
• Pre-coating size reference indicates the diameter before the diamond layer, helping you select the right bit for your project.
• Versatile application ideal for DIY, crafts, tile work, and professional installations on non-metallic substrates.

Ready to drill hard materials with confidence? Add the Diamond Coated Twist Drill #40 to your toolkit today.