CS Unitecs heavy-duty long reach scalers operate at 2200 blows per minute with low air volume consumption - requires only 4.5 cfm at 90 psi. An inline handle provides comfortable operation. Its performance has been proven in the harshest environments on ships, rigs and construction sites throughout the world. This Genuine Trelawny long reach chisel is made to last long and work hard in a range of applications. Chisels can be mounted quickly and easily with our quick turn chisel holder system. Simply align the bearing hole to insert a chisel, rotate and youre ready to run. Saving you time and money when servicing tools. All long reach chisels come equipped with 5/8" hex shanks.