With a ball head design that allows 360-degree adjustments, the US-A1 Umbrella Swivel for Shoe Mount Flash from Phottix is a handy tool for maximizing the potential of your on-camera flash unit. The Swivel mounts to a light stand via its 3/4" receiver and the flash mounts to it via the cold shoe at the top of the US-A1. The Swivel will support up to 3.5 lb. Made to be used with umbrellas, the US-A1 has a locking channel that accepts umbrella shafts up to 8mm in diameter. A 5/8" to cold shoe adapter is included for lights or other gear with a 5/8" receiver.