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Overview
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 2mm increments.Sizes 4 to 14 mm. Increments of 2.0 mm. Max thickness 4 mm. Made from HSS ( High Speed Steel ). Shank: 6 mm diameter.