Wolfcraft 2933000 HSS Step Drill Bit Set, 2-Piece, 4-12 mm and 4-20 mm, 9 Steps Each, Cylindrical Shank, for Sheet Metal, Plastic, Wood

Two HSS step drill bits cover hole diameters from 4 to 20 mm in 9 steps per bit, with self-centering tips for clean, precise drilling in sheet metal, non-ferrous metals, plastics, and wood up to 4 mm thick.

Overview

The Wolfcraft 2933000 is a 2-piece step drill bit set made of high-speed steel (HSS). It includes one bit with a diameter range of 4-12 mm and another with 4-20 mm, each featuring 9 steps. The cylindrical shanks are 6 mm and 8 mm respectively. The bits have a self-centering tip and are uncoated. They are suitable for drilling, deburring, and enlarging holes in sheet metal, non-ferrous metals, plastics, and wood, with a maximum material thickness of 4 mm. The set comes in a blister pack.

What stands out

• Two bits cover a wide range from 4 to 20 mm
• 9 steps per bit allow gradual hole enlargement
• Self-centering tip prevents walking on smooth surfaces
• HSS construction for durability in common materials
• Cylindrical shank fits standard drill chucks

Technical details

• Material: High-Speed Steel (HSS)
• Number of pieces: 2
• Drill bit 1: diameter 4-12 mm, 9 steps, length 65 mm, shank 6 mm
• Drill bit 2: diameter 4-20 mm, 9 steps, length 75 mm, shank 8 mm
• Shank type: cylindrical
• Maximum material thickness: 4 mm
• Suitable materials: sheet metal, non-ferrous metals, plastics, wood
• Application: drilling, deburring, enlarging holes
• Coating: uncoated
• Packaging: blister pack

Our verdict

A practical two-bit set for anyone working with thin sheet materials, offering a wide diameter range and self-centering convenience.