Perfect for taking on every ride. Unique Park I-Beam technology is strong compact and lightweight. The I-Beam creates a structure to mount all the tools onto. 1. 5 2 2. 5 3 4 5 6 and 8 mm wrenches cover most fixings on a bike including many crank bolts. A T25 Star shaped wrench is useful for Disc brake rotor bolts. A straight blade screwdriver is ideal 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.