Step Drill Bits HSS 5PCS Titanium Step Drill Bit Set, 50 Sizes (1/8" to 1-3/8") High Speed Steel Unibit Drill Bits Set for Sheet Metal with Aluminum Case, Multiple Hole Stepped Up Bits for DIY Lovers

High Durability & Universal Use Cortool Industry-grade High Speed Steel (60HRC) with titanium coating can reduce friction and run cooler, which ensures prolonged wear-resistance and durability.

Cortool 5PCS step drill bits are compatible with majority brands of electric drills or bench drills on the market.

Easy to store in toolbox or pocket.

Precision Drilling Cortool step drill bit has 118° Split Point which provides fast cutting with 3-Flat Shank provides fast and precise cutting while prevents walking and shedding; Laser calibration offers accurate positioning assistance.

Cortool step drill bits are built with double flutes design clears particles quickly, decreases friction and heat for a faster, cooler and clean drilling performance.