The lightweight aluminum alloy material is durable and improves the overall performance of the Composite Center Slider Drive Shaft Aside from the great looks, aluminum alloy will not flex as much as plastic under stress or during high ambient temperatures. Compatible with Arrma Series ARA7204 1/7 MOJAVE 4WD EXTREME BASH ROLLER DESERT TRUCK ARA106058 1/7 MOJAVE 6S BLX 4WD BRUSHLESS DESERT TRUCK RTR ARA7604V2 1/7 MOJAVE 6S V2 4WD BLX DESERT TRUCK WITH SPEKTRUM FIRMA RTR