Material: stainless steel, black oxidation treatment, longer service life. Adjustable angle: the size of the rotating nut is adjustable, and the adjustable distance is 10-52mm. Anti-Slip Design: Plastic coated handle, anti-slip and comfortable, make your work more handy. Sturdy and durable: the oil cylinder is not easy to slip or break, so that the sliding claw and the worm gear are close to each other, and it is easier to loosen or tighten the worm gear with a wrench. Uses: It is suitable for replacing the grinding wheels or grinding discs of various angle grinders, table grinders, beveling machines, marble machines and circular saw machines.