Chisel for Spline Tool Chisel Type Scaling Chisel Shank Type - Machining Spline Shank Diameter 3/4 in Shank Hex Size 3/4 in Shank Length 2 in Measurement System Fractional Inch Head Width 1 1/2 in Overall Length 12 in Chisel Collar Shape Spline For Tool Type Rotary Drill