3PCS Metal Step Drill Bit Set, 4-12/20/32mm Metal Step Milling Cutter Triangle Conical Titanium HSS, Hex Shank for Steel, Wood, Brass, Aluminum, PVC, Center Punch and Torsion Drill Bit Included

【MULTI-SIZE】: 1pc 15-step drill bit (4-32mm), 1pc 9-step drill bit (4-20mm), 1pc 13-step drill bit (4-12mm). Three sizes are available to meet your needs. Package includes a nylon bag.

【QUALITY MATERIALS】: Classic high speed steel, titanium coating on the surface, proven performance and durability in drilling holes in plastics, wood, aluminum, copper, stainless steel and many other types of sheet metal. Titanium alloy drill bits are especially suitable for processing copper and aluminum parts/die steel/spring steel/cast iron parts/iron and other metal materials.

【PRECISE POSITIONING DRILL】: When you press on the surface, it produces automatic, high-impact, spring-loaded striking force, and an adjustable hood can adjust the striking force.The knurled surface of the brass body is highly slip-resistant, providing precise positioning points without worrying about deviations.【EASY DRILLING】: The twin-blade design offers faster, smoother drilling at low pressure and high steps, so you won't feel any stagnation or resistance, with optimal speed and accuracy.【LASER ENGRAVING】: The size is laser-engraved into the metal, so it won't wear down even with repeated use, making precise drilling easier.WHAT YOU GET1 x Nylon Bag1 x HSS Step Drill Bit 4-12 mm1 x HSS Step Drill Bit 4-20 mm1 x HSS Step Drill Bit 4-32 mm mm1 x automatic center punch1 x twist drill