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As a for checking chain wear. alloy structure, CNC-machined, and precisely made.
For 11 speed chains, replace at or just before the 0.5% reading
Hollow designed, light weight. Quickly and accurately determine the wear and stretch of chain
For 9 and10 speed chains, replace chain at or just before the 0.75% readings
Use: the chain checker's pins into two links, press the swing arm gauge tight, and check the gauge window for an accurate reading.
Size: 135 x 10mm Material: alloy colour: black Package Contents: 1 x Bicycle Chain Plier Only the above package content, other products are not included. Note: Light reflection 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.