A fast and convenient tool to remove and install 12 spline shimanoregsramreg style cassette lockrings as well as similar lockrings on rotor discs the park tool fr 5h lockring tool with handle features a modified fr 5 tool that allows use without removing most quick release skewer nuts the removable threaded steel handle makes it possible to replace a worn or damaged head park tool fr 5h lockring tool with handle features fast and convenient to use d