Description GPM Racing - TEAM LOSI - LASERNUT TENACITY U4 - LU4009 Aluminum Rear Lower Suspension Mount 12pc set This product includes :Suspension Mount-2pcsStainless Steel Flat Head Screw 3x12-2pcsStainless Steel Flat Head Screw 3x45-2pcsPOM Shim-4pcsStainless Steel Pin 3.5mm*61mm-2pcsOriginal Name / Part No:LOS234019+LOS234023+LOS234021Part location:Rear gear box areaProduct major function & usage:Stabilize rear lower arm1.Made with a quality light weight high tensile strength aluminum 6061 T6 to reduce gap and more stable to use.2.Inserted with POM for better strength with flexibility to minimize the gap of the hinge pins in order for the arms to be more stable when in motion.3.POM shims are provided to minimize the gap and strengthen the fitting for a smooth and stable drive.（POM shims are not required for the lower arm of GPM）