Irwin Unibit 4M USA 10502853 HSS Step Drill Bit 4-22mm (10 Holes) For Sheet Metal

Description

• Number of hole sizes: 10.
• Hole diameters: 4, 6, 8, 10, 12, 14, 16, 18, 20 and 12mm.
• The Irwin Step Drill Bits are designed for precise drilling in thin materials and have a single flute for maximum drilling control into sheet metal.
• Their unique flute design ensures perfect round holes in sheet metal.
• A fluted shank also prevents the drill bit from slipping in the chuck, along with a self centring point that will not walk and eliminates centre punching.
• Made from industrial grade M7 high-speed steel.