Bicycle Chain Checker Wear Indicator Stainless Steel MTB Bike Mountain Bike Chain Hook Bolt Measuring Tool Gauge Ruler

Specifications Product main materialStainless steelProduct ColorSilverProduct size125x42x2mm 4 92 1 65 0 08 Product net weight29gFunctionMeasure the degree of wear of the chain 0 75 means wear 1 0 means severe wear chain maintenance hook measure length measure thread diameterInstructions for use 1 Measure the degree of wear of the chain Insert a hook without text into the chain link and observe the end of the hook with text If it cannot be inserted at all the chain is good If it is inserted to the value of 0 75 it means that the chain is worn but can still ride for a period of time If it is inserted into the value of 1 0 it means that the chain has been severely worn and it is generally recommended to replace it immediately 2 Chain maintenance hook Use the two hooks on the back of the measuring ruler to secure the chain It is more convenient for maintenance and removal of the chain Avoid getting oil on your hands and the chain bouncing 3 Length measurement The laser laser scale on the lower part of the measuring ruler can measure the length of 1 10cm 0 39 3 94 4 Thread diameter measurement Insert the screw to be measured into the hole and push it in the direction of the small hole When you can t push it you can know the thread diameter by observing the stop position number Packages Included 1 X Bicycle Chain Measuring Gauge Notes 1 Due to the different monitor and light effect the actual color of the item might be slightly different from the c