Yosoo Quick Release Plates Systems for Velbon CX-444, CX-888, CX-460, CX-460mini, CX-470, CX-570, CX-690, DF-50 Sony Tripods VCT-D580RM, VCT-D680RM, VCT-R640 Velbon 1. Size:Length 66mm (2.6") x Width 52mm(2.05") 2. Bottom Size:44mm(1.73") x 44mm(1.73") 3. Quick release plates attach to the tripod mount on your camera and allow you to quickly and easily attach and detach your camera from a compatible tripod head. 4. Extra quick release plates allow you to conveniently swap out more than one camera with the same tripod. 5. Suitable for:Velbon CX-444, CX-888, CX-460, CX-460mini, CX-470, CX-570, CX-690, DF-50 SONY VCT-D580RM, VCT-D680RM, VCT-R640