Accessories:C-Hub-2pcsKing Pin-4pcsStainless Steel Round Head Screws 3x16-2pcsStainless Steel Round Head Screws 3x14-2pcsManual number:6832+3642XProduct major function & usage:Stabilize the tie rods, lower arms and knuckle arms in order to give a smooth steering.Major advantages of upgrading to this product:1. Aluminum 6061 T6 is light material with high tensile strength for great durability during extreme RC action.2. Method to fix the knuckle arm changed from shaft hole to bearing in order to minimize the gap and ensure a very smooth steering.3. Multiple positioning holes for adjusting the angle of upper tie rod.Other special notes and comments:Suitable for Traxxas Slas 4x4, Slash 4x4 Low-CG, XO-01, RUSTLER 4X4 VXL-67076-4We use a quality light weight high tensile strength aluminum 6061 T6 and is then anodized with scratch resistant colorsWe also have a big selection of multiple colors available now!! Let¡¯s ¡°hop up¡± your vehicles to give them the best looks and performance on the market ¡¦ colors are available in blue, red, grey silver/gun metal, orange, green, black, brown