Accessories:Rear Knuckle Arm - 2pcsPOM Shim - 4pcsManual number:1952Product major function & usage:Stabilize rear arms and rear tie rodsMajor advantages of upgrading to this product:1. Made with aluminum 6061 T6 material for better strength and greater durability.2. POM shims are provided to minimize the gap and strengthen the fitting for a smooth and stable drive.3. Multi positioning holes available for different angle of tie rods.We 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