Simply forALIGN it with existing chainring bolt holes for a secure fit, making it beginner-friendly. 1 Bicycle Chainring Guard. Size:The inner hole spacing is 10 cm, and the outer hole spacing is 11 cm.
Length: 400mm. [ 2-WAY-BOLT CLAMP ] – Two-way-bolt saddle rail clamp provides an easy to adjust, vise-like grip. Your seat has to be the style of hollowed out in the middle, otherwise one of the screws will be difficult to tighten;.