Topeak Chain Wear Indicator and Hook Tool YGroup_7033471565869 use it either towards the

use it either towards the headtube or your seatpost depending on your preference and comfort

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check your owner's manual or view our blog to learn how to identify the correct headset

Topeak Chain Wear Indicator and Hook Tool YGroup_7033471565869 use it either towards theEnsure your chain and drivetrain are in good shape! The Topeak Wear Indicator easily tells you whether you need to replace your chain. It also features a hook tool to help install new links. Chain Wear Guide User Instructions: 1) Put " STEP 1 " inside a chain space and fully engage a roller. 2) PRESS " STEP 2 " on a roller. If "STEP 2" can't engage in the roller your chain is good to go. If "STEP 2" can engage in the roller its time for a new chain.