I have always disliked adding all the axle spacers for my 3/4″ motor brackets. There seems to be a trend at the using 3/4″ motor brackets also. This new spacer is made especially for use with 3/4″ motor brackets for CanAm cars. Made to a specific width so only one axle shim is required to make the 3 1/8″ width! Precision drilled and reamed to fit perfectly on your axle. Tapped thru. Should work with any 3/4″ wide bracket and ball bearings. And for those that want to use them for F1 and 3 1/4″ track width, there is a very nice black anodized .060 wide additional spacer. Pricing is $1.95 each for special spacer and .90 each for the .060 additional spacer. They can be bought separately. Track discount available, packaged 10 pair to a bag.