Complete set of high quality and durable steel replacement inserts including the Wolf Tooth Packwrench. The side wrench contains magnets that hold the interchangeable inserts in place. The photo gallery demonstrates the practical use of this kit. Made of hardened steel with nickel-free nickel plating. Each insert is sold separately. The wrench itself is equipped with a handy gauge for checking or measuring the chain line. Komatibilita: Ultralight Cinch and ISIS Spline Wrench Insert - older ISIS bottom brackets or the Race Face Cinch direct mount chainring system Ultralight Cassette Lock Ring Wrench Insert - cassette lockrings and some centerlock rotor lockrings Ultralight 8mm Hex Wrench Insert - pedal removal and other 8mm hex applications Ultralight 16mm Hex Wrench Insert - Race Face Cinch aluminum spindle bolts, frame pivots, and other 16mm hex applications Ultralight 20mm Socket Insert - for the Otso Cycles Tuning Chip and other 20mm socket applications Weights: Pack Wrench • 88g | Cassette Lock Ring Wrench Insert • 31g | Cinch and ISIS Spline Wrench Insert • 56g | 8mm Hex Wrench Insert • 63g | 16mm Hex Wrench Insert • 78g Material: wrench • aluminum | Inserts • nickel-plated 4140 Chromoly steel Made in the USA