SuperB 2 N 1 Chain Checker & Chain Hook bottlecages Fits all mountain bikes with

Fits all mountain bikes with standard 1 1⁄8 steerers (10mm stem clearance required)

Mountain bikers

The Macro Drive 1400+ throws out a powerful 1400 lumens of output through our Tri-Focus Optics

Integrated cadence – the feature simplifies your setup by providing accurate cadence directly from your trainer

Slim Fit closely and precisely conforms to the curves of the body

SuperB 2 N 1 Chain Checker & Chain Hook bottlecages Fits all mountain bikes withCompatible with all bicycle chains from single speed to 12 speed. Precision chain checker. Quickly and accurately indicates the wear and stretch of the chain. Laser cut and made of stainless steel. When chain is between 0. 75% and 1% worn, a replacement is suggested. Chain hook is a must for you to assemble or break the chain.