Material: in high quality and robust aluminum alloy. Not easy to corrode, robust and durabletail: the roller key has adjustable jaws that open between 6 and 68 mm. Large jaws and a short handle make it Perfect for tightening the emptying of a drain on a short ultra-light basin: has a very low profile design, an 8 inch length allowing it to easily access the restricted spaces, an non-slip socket to save your joints while working . Conception of precision turbine: the endless cursor and screw of the precision turbine are closely associated. Flexible and rapid sliding, important torque, good tenacity, stable adjustment port, easy sliding and quick adjustment, improving the efficiency of the efficiency WORKLONE Application: Used to tighten and loosen the nuts and bolts, suitable for applications in pipelines, the natural gas industry, plumbing, sanitary engineering, Etc. Adjustable 6-68mm Open Keys with Aluminum Key Key Bathroom Key Plumber Hand tool for tightening bolts of loosening nuts