Swift's approach to axles is to provide the best axle possible for an economical price point. The 30mm variant of Swift's line of axles is no different!
At 1020mm width, the axle can be cut to a length desired depending on what you need - many cadet karts require a narrower- axle, sometimes 970, 960, or even 950mm. Take a saw, cut down the axle, and you're set! Extra keyway area is left over on the Swift axle to accommodate the width you need if narrower than the stock 1020mm.
The soft axle is 2.5mm thick, and is ideal for karts that need reduced grip performance for tracks that will be slightly more rough, or with additional rubber on the track surface.
The medium axle is 3.0mm thick, and is ideal for most applications or 'green' race tracks for most racing karts. Keep one of these in your chassis or as a spare if you need a neutral set up option for your chassis.
Each axle is keyed universally, to fit all makes and models of 'pinned' keyways.