1Clamping lever is made from high quality alloy and surface is finished by power coating or blackening for durability and rust protection 2There are four different thread length for these M10 clamping levers from which you can choose the proper one to meet your need 3By pressing down on the handle button the serrations are disengaged and the handle can then be turned to the desired position 4The inside return spring automatically engages the teeth, the handle can then be fixed in original position 5The classic element find use in machine construction, tool making and plant construction, heavy-duty applications