- Universal Compatibility：Compatible with 1/4, 3/8, 1/2 electric drills or bench drills, but only work for sheet metal, aluminum or plastic.
- Convenient & Precise：Each level of each bit is clearly marked with laser engraving so you can find and drill the precise right diameter every time!
- Smooth & Clean Drilling：Dual grooves quickly remove chips and other swarf as you work, keeping your work safe and each hole well deburred.
- Distinct Shank Design：Our ¼ and ⅜-inch shanks are engineered for maximal stability and strength to prevent any offset or slippage.
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