Park tool fr 5h cassette lockring tool with handlea fast and convenient tool to remove and install 12 spline shimano and sram style cassette lockrings as well as similar lockrings on centerlock disc rotors the fr 5h features a modified fr 5 tool that allows use without removing most quick release skewer nuts the removable threaded steel handle makes it also possible to replace a worn or damaged lockring tool buy park tool workshop tools from chain reaction cycles the worlds largest onl