Lezyne Chain Checker Gauge - 5-12 Speed PLP|Model Year Rim width external: 35mm

Rim width external: 35mm

Shimano I-Spec A - Shimano I-Spec B - Includes all required hardware for either I-Spec A or B too

Sleeve Length: All the way

That's the stuff that Avid has made look so easy for 17 years

Lezyne Chain Checker Gauge - 5-12 Speed PLP|Model Year Rim width external: 35mmSensibleand stylish, the Chain Gauge is a multi function bike chain checker featuring an integrated chain hook and wear indicator as well as a handy valve core removal tool. Compatible with most 5 12 speed bike chains and precision machined for superior accuracy, the Chain Gauge is a stainless steel insurance policy against premature drivetrain wear. Hang it close to your repair stand with the included ring so youll never go too long without checking