Bosch 3-piece HSS step drill bit set 4-12/4-20/6-30

Key features

• HSS Step Drill Bit performs smooth drilling in several diameters with one drill bit
• Pre-punching is not necessary as the split-point tip allows for an easy start
• CNC ground spiral flute enables optimised chip removal and less vibration for even drilling
• Highest cutting smoothness due to axial and radial relief grinding
• Made of HSS for a long lifetime. Laser-markings for hole diameters.
• 3-flat shank prevents slipping in the chuck of rotary drills and drivers

Technical data

• Shank diameter, mm: 6; 8; 10
• Step diameter (range), mm: 4-12; 4-20; 6-30
• Step height: 4; 4; 4
• Total length, mm: 66.5; 70.5; 93.5
• Pack quantity: 3 Pcs
• Price: £200.17