2x TIMCO Step Drill SD412

Amazon

For drilling, enlarging and de-burring holes in thin sheet metal up to a thickness of 4mm. High quality M2 grade HSS Steel 3 flat shank to prevent slipping in the chuck Titanium Nitride (TiN) coating to reduce friction and prolong life Drilling diameter clearly marked on steps of drill for easy identification, Weight: 0.1322773572 Pounds, Manufacturer: TIMCO

ManoMano

General description Ideal for drilling, enlarging, or de-burring precise holes in thin materials such as alloy and non-alloy metals up to a thickness of 4mm. Technical specifications Material: M2 HSS (High-Speed Steel) Coating: TiN (Titanium Nitride) Drill size range: 4-12mm