DIAGER 3 Piece HSS Step Drill Bit Set – Sizes – 4-12mm – 4-20mm – 4-30mm

Diager 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 2mm increments.

Made from HSS ( High Speed Steel ).

Set of 3 consisting 1 of each 4-12 mm, 4-20 mm, 4-30 mm.

Supplied in a metal case.

Diager 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 2mm increments.