GEAR CALCULATOR AFFINITY TRACK GEAR ROTATING CHART QUILL Clamp fits 7mm standard rails

Clamp fits 7mm standard rails and 7x9mm oval rails

Reflectors on outside wheel trays ensure extra visibility in low light

UST - Universal Standard Tubeless licensed tire for use with UST designated rim combinations for the best possible tubeless interface

A slightly shorter version of the popular hi-rise style

GEAR CALCULATOR AFFINITY TRACK GEAR ROTATING CHART QUILL Clamp fits 7mm standard railsRotating chart for making track related gear calculations simple Spin the perfect gear ratio, on the track or in the streets reliable, accurate gear calculations for (700c wheel) track bikes Affinity did the math and created a simple, easy to use chart which generates 100% accurate calculations unlike inaccurate online calculators Rotate the chart to choose your chain ring size, the window then displays the results of your chain ring & cog gear ratio