Add-ons:Brake Disk-2pcsStainless metal Pin 2x11-2pcshandbook amount:1654Product major function & usage:1. Combine tires and front & straight back wheel shaft for smooth turning2. Good design partMajor benefits of upgrading with this particular item:1. Contemporary metallic design with swirl engraving regarding exterior musical company.2. Equate to initial 6mm, this component is established 8mm to widen the wheel track for better protection with this particular chassis.3. Unique design of hex claw to put up the wheel hub tightly, more stable and makes the wheel more powerful.Other unique papers and remarks:This item cannot be coupled with GPM Racing #SSLA1277RH, SSLA1280FH, SSLA1277RHA, SSLA1280FHA, SSLA1280FH21, SSLA1277RH22