A selection of essential Metric hex wrenches in a convenient folding package. One piece composite handle is comfortable lightweight and slip resistant - and 40% stronger than steel. Wrenches are made from high torque Bondhus Protanium industrial quality tool steel for a long life. 1. 5 mm 2 mm 2. 5 mm 3 mm 4 mm 5 mm and 6 mm size hex wrenches.