ParkTool Chain Checker Kids bike Finally the excess dirty fluid

Finally the excess dirty fluid drops into a second lower reservoir so it’s kept away from the clean chain

so that the alarm is inactive

Engineered compliance

Available in 10mm

ParkTool Chain Checker Kids bike Finally the excess dirty fluidTo alleviate poor shifting and uneven drive train wear, manufacturers recommend chain replacement before rear cog replacement. Now you can quickly and accurately determine the wear and stretch of any chain with the Park Tool Chain Checker. Simply insert the Chain Checker's pins into two links, press the swing arm gauge tight, and then check the gauge window for an accurate reading. . 10 and 11 speed compatible . For the modern 9 and 10 speed chains,