Leofoto STB-75 Rapid Lever-Lock Outdoors Ball Head w/ Integrated 75mm Bowl Adapter Black. The STB-75X is designed to be used with 75mm compatible systematic tripod apexes. It features a redesigned lever-release arca clamp as well as a lever controlled ball lock which creates an extremely low-profile setup. The redesigned clamp is a hybrid dual clamp that accepts both pictatinny as well as arca-type rails with an adjustable clamping width. The STB-75X has an integrated 75mm sized systematic adapter and cannot be used as a normal ball head and is not compatible with 3/8'' mounting studs. This product can only be placed into a 75mm systematic tripod apex. Specifications for Leofoto STB-75 Rapid Lever-Lock Outdoors Ball Head w/ Integrated 75mm Bowl Adapter: Manufacturer: Leofoto Color: Black Tripod & Bipod Material: Aluminum Tripod Head Type: Ball Length: 2.99 in Fabric/Material: Aluminum Features of Leofoto STB-75 Rapid Lever-Lock Outdoors Ball Head w/ Integrated 75mm Bowl Adapter Compatible Leofoto 75mm systematic tripods: LM-32xC LM-36xC LN-364C SO-322C SO-362C Package Contents: Leofoto STB-75 Rapid Lever-Lock Outdoors Ball Head w/ Integrated 75mm Bowl Adapter Leofoto STB-75X: STB-75 Rapid Lever-Lock Outdoors Ball Head w/ Integrated 75mm Bowl Adapter Black