This Locking Accessory Shoe from Dot Line features female 1/4"-20 threads on the bottom for mounting to a lightstand or tripod. The top accepts any standard flash foot, and features an auto lock when the foot is slid into the shoe. Grooves in the shoe enable the multiple pins on TTL flash units to slide on and off of the unit with ease. A release on the side of the shoe unlocks the foot of the flash.