UNIBIT STEP DRILL BIT

Description

Single concave flute design creates perfectly round holes in thin materials including steel, brass, copper, and aluminum. Constructed of industrial grade, high speed molybdenum steel. SpeedPoint tip for fast starts. No. 10231: Minimum Size: 1/8 In., Maximum Size: 1/2 In., Step Range: 1/32 In., Number of Holes: 13 Steps, Shank Diameter: 1/4 In. Hex, Material: High Speed Steel, Pkg Qty: 1, Package Type: Clamshell No. 10232: Minimum Size: 3/16 In., Maximum Size: 1/2 In., Step Range: 1/16 In., Number of Holes: 6 Steps, Shank Diameter: 1/4 In. Hex, Material: High Speed Steel, Pkg Qty: 1, Package Type: Clamshell No. 10233: Minimum Size: 1/4 In., Maximum Size: 3/4 In., Step Range: 1/16 In., Number of Holes: 9 Steps, Shank Diameter: 3/8 In. Hex, Material: High Speed Steel, Pkg Qty: 1, Package Type: Clamshell No. 10234: Minimum Size: 3/16 In., Maximum Size: 7/8 In., Step Range: 1/16 In., Number of Holes: 12 Steps, Shank Diameter: 3/8 In. Hex, Material: High Speed Steel, Pkg Qty: 1, Package Type: Clamshell No. 10239: Minimum Size: 7/8 In., Maximum Size: 1-1/8 In., Step Range: 1/4 In., Number of Holes: 2 Steps, Shank Diameter: 7/16 In. Hex, Material: High Speed Steel, Pkg Qty: 1, Package Type: Clamshell