This plastic Axle Spacer takes up the gap between the Slash rim and axle nut when using the black wheel hex on the right front of your Slash chassis.  No longer will you need to stack various metal washers or use an axle bearing to take up the gap between the rim and axle nut. One Axle Spacer does the trick!  Currently offered in Bright Red so they're easy to find on your pit mat or on the floor in the event you drop them. 6 Axle Spacers come in each kit.