Easy to fit and adjust, the Gusset Lil Chap Chain Device is a little peace of mind that your narrow/wide chainring won’t let you down and drop a chain. Simple security.Gusset Lil Chap Chain Device Features6061 Alloy with a glass-reinforced plastic upper guideSeat tube fitting (34.9mm with 31.8mm shims).Adjustable chainline.Weight 50g
Best Price: £22.99 from Leisure Lakes Bikes