Quick Release Plate Adapter with 1/4" & 3/8" Screws for Manfrotto 501HDV DSLR
Kingjoy KH-6251 Sliding Quick Release Adapter Plate Video Head Tripod Head Clamp. 1x Kingjoy KH-6251 Adapter Plate. Maximum load: 6-10 kg. 20 mm of sliding travel within plate to optimally balance gear.