ITEM NAME:Bike chain ruler for measuring chain wear degree G3R5 Bike chain ruler for measuring chain wear degree G3R5 A quarts of chain uses badly and bring pinion at an accelerated pace. 0.75% and 1%, the points on which experts suggest the chain replacement Easy to use, very durable Compatible with all chains Size: Approx. 14cm x 4.8cm / 5.51 "x 1.89" color :Silver Material: carbon steel Package contains: 1 x bike chain ruler Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
