The lifeline professional 21 in 1 multi tool packs all most everything you need for bike maintenance and repair on the move at an outstanding 138g weight it has a full range of allen key hexs from 25mm to 8mm it features 3 different size spoke keys compatible with industry leaders like dt174 sapim174 and mavic174 ksyriums it also features the 3 most popular torx tools for european groupsets and disc brake adjustment