Chisel for Spline Tool Chisel Type Bushing Tool 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 3/4 in Overall Length 9 3/4 in Chisel Collar Shape Spline For Tool Type Rotary Drill