The steel material is durable and improves the overall performance of Shock Standoff 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. ARA7617V2 1/7 FELONY 6S BLX STREET BASH ALL-ROAD MUSCLE CAR RTR ARA7618 1/7 FIRETEAM 6S 4WD BLX SPEED ASSAULT VEHICLE RTR ARA7615V2 1/7 INFRACTION 6S BLX V2 ALL-ROAD TRUCK RTR ARA109001 1/7 INFRACTION ALL-ROAD STREET BASH 6S BLX WITH SPEKTRUM RTR WITH AVC ARA109011 1/7 LIMITLESS ALL-ROAD SPEED BASH: ROLLER ARA7116V2 1/7 LIMITLESS V2 SPEED BASH ROLLER 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 ARA106053 1/8 KRATON 4WD EXTREME BASH ROLLER SPEED MONSTER TRUCK ARA106040 1/8 KRATON 6S BLX 4WD BRUSHLESS SPEED MONSTER TRUCK WITH SPEKTRUM RTR ARA8608V5 1/8 KRATON 6S V5 4WD BLX SPEED MONSTER TRUCK WITH SPEKTRUM FIRMA RTR ARA106044 1/8 NOTORIOUS 6S BLX 4WD BRUSHLESS CLASSIC STUNT TRUCK WITH SPEKTRUM RTR ARA8611V5 1/8 NOTORIOUS 6S V5 4WD BLX STUNT TRUCK WITH SPEKTRUM FIRMA RTR ARA106060 1/8 OUTCAST 6S BLX 4WD BRUSHLESS STUNT TRUCK RTR, 10TH ANNIVERSARY LIMITED ARA106042 1/8 OUTCAST 6S BLX 4WD BRUSHLESS STUNT TRUCK WITH SPEKTRUM RTR ARA8710 1/8 OUTCAST 6S BLX 4WD EXTREME BASH STUNT TRUCK RTR ARA106048 1/8 TALION 6S BLX 4WD BRUSHLESS SPORT PERFORMANCE TRUGGY WITH ARA8707 1/8 TALION 6S BLX 4WD EXTREME BASH SPEED TRUGGY RTR ARA8306 1/8 TLR TUNED TYPHON 4WD ROLLER BUGGY ARA106046 1/8 TYPHON 6S BLX 4WD BRUSHLESS BUGGY WITH SPEKTRUM RTR ARA8606V5 1/8 TYPHON 6S V5 4WD BLX BUGGY WITH SPEKTRUM FIRMA RTR