The lifeline performance wheel jig is designed to give you the ideal platform for lacing and truing road and mountain bike wheels the upright struts adjust via a single ergonomic dial to accommodate all standard axle spacings including 100mm front 130mm rear 135mm rear and 142mm rear the radial arm accommodates all wheel sizes up to 29 700c the precision caliper allows you to fine tune your spoke tension for the perfect combination of strength stiffness and straightness the lifeline pe