Upgrade Your Drilling Toolkit

This 2-piece diamond step drill bit set tackles the toughest hole-modifying tasks. Whether you're a contractor installing bathroom fixtures or a DIYer building a patio, our triple-step design (20mm/35mm/50mm) handles enlarging, beveling, and polishing in one go – no more juggling multiple tools.

Built for Real-World Demands

Forged with industrial-grade diamond grit and shock-resistant steel, these bits chew through tile, engineered stone, and concrete without chipping. The M10 threaded shank locks securely onto angle grinders, while the included adapter rod lets you use standard drills. Plus, the straight-flute design clears debris fast, keeping your cuts smooth.

Smart Features for Safer Work

→ Graduated steps reduce slippage on curved surfaces
→ Wax-infused coating minimizes heat buildup
→ Works on granite, quartzite, marble & ceramic
→ Note: For best results on hand drills, use low RPM and firm pressure. Requires proper PPE (goggles/dust mask).