13.0mm - 30.0mm Metric High Speed Steel 1/2” Reduced Shank Twist Drills (click for size options)

13.0mm - 30.0mm Metric High Speed Steel 1/2” Reduced Shank Twist Drills (click for size options)Reduced shank HSS twist drill. 118 notched point with 30 helix. Notched point is a variation on the standard chisel point, providing faster starting and reduced drill wander. 118 point angles are ideal for use in materials such as mild steel and cast iron. The 118 point creates easily controlled chips which are wide and thin. Bordo reduced shank HSS drills are ground and then a black finish is achieved by steam tempering, a thermal process resulting

• Reduced shank HSS twist drill.
• 118º notched point with 30º helix.
• Notched point is a variation on the standard chisel point, providing faster starting and reduced drill wander.
• 118º point angles are ideal for use in materials such as mild steel and cast iron.
• The 118º point creates easily controlled chips which are wide and thin.
• Bordo reduced shank HSS drills are ground and then a black finish is achieved by steam tempering, a thermal process resulting in a porous tool coating.
• This surface aids chip flow and heat dissipation.
• The drill is then ground a second time to achieve a bright finish on the shank and cutting edges.