Product Detail Package Quantity: (1) Piece Type: Long Reach Chisel Scaler Stroke Length (Inch): 1-1/8 Blows Per Minute: 4600 Shank Size (Inch): 1/2 . The "Universal Tool UT8630LI 64 4600bpm Long Reach Chisel Scaler" is best product for you. We recommended Universal Tool UT8630LI 64 4600bpm Long Reach Chisel Scaler