Add-ons:Brake Disk-2pcsStainless metal Pin 2x11-2pcshandbook amount:1654Product major function & usage:1. Combine tires and front & back wheel shaft for smooth turning2. Good design partMajor great things about upgrading with this particular item:1. Contemporary metallic design with swirl engraving regarding outside musical business.2. Equal initial 6mm, this component is made 8mm to widen the wheel track for better security applying this framework.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 product can't be along with GPM Racing #SSLA1277RH, SSLA1280FH, SSLA1277RHA, SSLA1280FHA, SSLA1280FH21, SSLA1277RH22