ITEM NAME:RC Car Metal Battery Mounting Plate Tray for 1/10 RC Crawler Car TRAXXAS TRSEAU Description: Low center of gravity battery tray for Traxxas's TRX-4, by sitting the battery lower you get a lower center of gravity which helps your rig deal with off camber sections and reduces the chance of it rolling over! Battery retention system is changed to using velcro and with the integrated braces keeps all sorts of sizes of 3s batteries in place no matter the thickness! Feature: For: Traxxas TRX-4 Material: Alloy Color: Black(Velcro Strap's color random) Battery Size : 130mm X 43mm (Max) Include: Battery Tray (1 pc) Battery Brace (1 pc) Velcro Strap (1 pc) Screws (6 pcs).For: Traxxas TRX-4. Battery Brace (1 pc). Battery Tray (1 pc). Material: Alloy. Battery Size : 130mm X 43mm (Max).