Faithfull Step drills are used for cutting varying hole sizes in material up to 4 mm thick without changing the drill bit. Each drill cuts parallel holes within a specific size range, rising in 2 mm increments.
The set of three is supplied in a metal storage case.

Made from HSS ( High Speed Steel ).

Set of 3 consisting 1 of each 4-14 mm, 6-20 mm, 6-30 mm.

Supplied in a metal case.