18 functions (spoke wrench; valve core wrench; flat head #3.5 and Phillips #2 screwdriver bits; 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, and 8mm hex; and T10, T25 Torx compatible) install and remove master links, clear tire sealant clogs from valve stem, tighten valve stem lock nut, store 1 set of master links (links not included) Magnets keep all bits in place / Ball detent swivel head helps access hard-to-reach places Handle doubles as breaker bar for extra torque when head is bent / Pliers works with 9-, 10-, 11- and 12-speed master links and chains (not compatible with Campagnolo 12-speed chains) Master Link storage is compatible with SRAM PowerLock Link, Shimano Quick-Link, KMC Missing Link and other similar master links (not compatible with Connex Links by Wipperman) Weight: 68g / Material: 7075-T6 aluminum / Made in the USA