Modular Battery Tray kit compatible with Optima and Odyssey Group 34/78 Batteries. This CNC machined aluminum battery mount mounting/relocation is designed to accommodate Optima, Odyssey, and Group 34/78 batteries. Made out of 6061-T6 billet aluminum, the entire battery mount is a simple, strong, and great looking way to hold your battery anywhere. Has 6 mounting holes to give you added flexibility. The dimensions of the battery mount are 11 1/2″ X 8 1/2″ X 7 1/2 tall. NOTE: This kit is designed to relocate the battery in the trunk of your vehicle.