Park Tool TWS2C - Fold-up Torx Wrench For star-shaped fittings Torx wrenches, AKA star-shaped wrenches, are becoming increasingly popular on disc brakes and chainring bolts as they are less likely to round than Allen head bolts, hence the latest Park tool - the TWS2C Fold-up Torx Wrench - that organises the 9 most popular sizes of Torx wrench in an easy-to-handle foldable format. The one-piece composite handle is warm, comfortable, lightweight, and slip resistant - and Park tell us it's 40% stronger than steel. Each wrench is manufactured in high-torque Bondhus Protanium industrial quality tool steel to guarantee longevity. Sizes - T7, T9, T10, T15, T20, T25, T27, T30, and T40 - cover all bicycling applications.