The park tool ib2c i beam mini fold up hex wrench screwdriver and star shaped wrench set is a must have take along tool for road and off road use park tool ib2c i beam mini fold up hex wrench screwdriver and star shaped wrench set features unique park i beam technology makes this tool strong compact and lightweight the i beam creates a structure to mount all the tools onto 15 2 25 3 4 5 6 and 8mm wrenches cover most fixings on a bike including many crank bolts a t25 torx