Lightweight and compact multitool3 4 5 6 and 8 mm hex wrenches cover most fixings on a bike including many crank bolts a straight blade screwdriver is useful for adjusting screws on brake and gear components all tools fold into the i beam to create a neat regular shape that will slip easily into a jersey pocket or seatpack a must have take along tool for road and off road use covered by park39s legendary limited lifetime warranty