Step Drill Bit Set, 6-Piece, 3–12 mm and 4–12 mm

✅ Make several sizes. The stepped profile moves through several hole diameters along one bit.

✅ Read the marking. Diameter markings on the bit let you match the hole to the fitting you need.

✅ Use a hex shank. The hex shank connects to a suitable drill or bit holder for the job.

✅ Check the set. Six bits are supplied, three in each range; a drill and case are not confirmed as included.

Open stepped hole sizes with fewer bit changes

A six-piece step drill bit set for enlarging suitable holes progressively in workshop and DIY work. Three bits cover the 3–12 mm range and three cover 4–12 mm. Match the workpiece, drilling speed and tool setup to the bit before drilling.

Technical details

• Set: six step drill bits
• Ranges: three 3–12 mm and three 4–12 mm
• Shank: hex
• Drill and case: not confirmed as included

Compare the bit ranges with your next hole-making task and choose the set.