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 ALUMINIUM SPINDLE BOLTS, FRAME PIVOTS, AND OTHER 16MM HEX APPLICATIONS KEY FEATURES MACHINED FROM 7075-T6 ALUMINIUM IN MINNEAPOLIS, USA. INCLUDES THE WRENCH AND STEEL INSERTS. 1-INCH HEX DRIVE INTERFACE COMPATIBLE INSET MAGNETS ENABLE QUICK COUPLING AND DECOUPLING OF STEEL INSERTS. 16-NOTCH 44 MM BOTTOM BRACKET TOOL (OR CENTERLOCK ROTOR TOOL) COMPATIBLE. WEIGHT - 88G