Comprehensive bicycle crank and chainring tool set designed for a wide range of repair tasks. Professional-grade crank puller, crankset key and chainring nut wrench combined in one compact, portable unit to make crank and chainring removal fast, reliable and easy. Key benefits - One tool for multiple jobs: removes chainrings and cranks, loosens chainring nuts and works as a crankset key and puller. Reduces the need to carry several separate tools. - Saves time: quick-release and easy installation features speed up repairs so you get back on the road or trail faster. - Versatile and reliable: built for common crankset and chainring maintenance tasks — a practical addition to any bike toolkit. - Portable design: lightweight and compact so it fits in a saddle bag, backpack or garage drawer for on-the-go repairs or workshop use. - Professional performance: engineered for repeatable, solid operation during disassembly and maintenance. Compatibility and function - Designed for general crank and chainring removal tasks and compatible with a broad range of cranksets and chainring assemblies. Functions include crank puller operation, crankset key engagement and chainring nut removal. - Suitable for use by home mechanics, professional technicians and cyclists who perform routine overhauls or emergency repairs. - Quick-install and quick-release features reduce time and effort compared with standard hand tools. Typical use scenarios - Roadside repair: remove a crank or chainring quickly after a stripped bolt or crash to replace damaged parts and continue your ride. - Home maintenance: disassemble cranksets for bottom bracket service, chainring replacement or cleaning during regular bike servicing. - Workshop and mobile technicians: compact, multi-function tool that reduces the number of items to carry and speeds up common maintenance procedures. What you get - A multi-function crank and chainring removal tool that combines crankset key, crank puller and chainring nut wrench functions in one portable unit for efficient, straightforward repairs.