RAM Torque Large Rail Base with Universal Action Camera Adapter (RAM-B-408-112-15-A-GOP1U) (sku 51142)RAM Torque Large Rail Base with Universal Action Camera Adapter (RAM B 408 112 15 A GOP1U) The RAM Torque handlebar and rail mounting base has a 1'' rubber ball and accommodates bars 1 1 8'' to 1 1 2'' in diameter. Sizing inserts are included to provide a snug fit and protection of the rail. The mount utilizes nylon insert locknuts to prevent loosening in high vibration environments. Included is a short double socket arm and a GoPro Action Camera