Universally applicable for large circlips of 400 - 1000 mm nominal width, safe opening and closing of the rings and holding by self-locking precision spindle drive, assembly or disassembly of the circlips in one operation, safe hold of the ring with short, direct mountings, exchangeable tips with Ø 6 mm and 9 mm, for different diameter ranges, operation optionally with hexagon socket wrench, ratchet wrench or cordless screwdriver, areas of application wherever very high forces and torques have to be transmitted with large shafts and bearings, e.g. B. Wind power plants, tidal systems, generator construction, water power plants, large machine construction (rolling mills, presses), shipbuilding, aerospace, tools in plastic cases with foam insert, material of the working tips: chrome vanadium electric steel