Made from high quality HSS steel. Ideal for using to cut holes in a variety of materials including sheet metal, Aluminum, wood, plastic, etc.

Features:

• Stepped drill bit speeds up cutting speed while preventing the drill bit from deviating from the drilling centerline, drilling holes quickly, efficiently and sharply.
• Two-Flute design removes chips; dust and debris for clean and smooth cutting.
• Quick change hex shank, which can be easily fit into power driver, drill and press drill.
• These 3-Piece HSS Groove Step Drill Bit (4-12/ 4-20/ 4-32mm ) comes in a portable bag for Easy carry & Keeping out dirt
• Ideal for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc.

Material: HSS Steel 3 size shanks: #1 (5 steps): 4mm, 6mm, 8mm, 10mm, 12mm #2 (9 steps): 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm #3 (15 steps): 4mm, 6mm, 8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm, 26mm, 28mm,30mm,32mm

Package includes: 3 X HSS Step Drill Bit 1 X Carry Bag