See whether you need to change your chain at a glance
Precision tool to accurately measures the wear state of your bicycle chain.
Replacing a chain when it's worn out can help prevent excessive wear from occurring on other expensive drive components. With the chain wear indicator from Connex, you can see at a glance if the chain needs to be replaced or is still good for further use. 
In comparison to shorter chain wear tools, the level of wear can be more precisely determined thanks to the increased testing length provided by the hinged design.
Precision made in Germany.
Specifications
Material: stainless steel
Compatibility: all ½" pitch (standard) bicycle chains
Pitch:12,7 mm (1/2")
Roller diameter: 7,75 mm