How many times have you needed a axle spacer, but can't find the right one? This is 12mm or 10mm ID, 20mm OD, same as oem fitment. 3" total length, so you can cut it down yourself. We can also cut this down to 2 sizes, but please contact us before, and let us know the sizes you need. There is an extra charge for cutting these down! use these for your caliper spacers, axle spacers etc  Choose from 10mm or 12mm