Introduction: QR 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. Extra QR plates allow you to conveniently swap out more than one camera with the same tripod. The QR shoe is designed to be used with the Velbon PH-249Q Pan Head and CX-444 / CX-460 Mini / CX-Compact / CX-888 tripods. 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 Dimensions: Size (Approx): Length 60 mm (2.36") x Width 47 mm(1.85") Bottom Size: 43 mm(1.69") x 43 mm(1.69") Weight: 23g Package included 1 x QR Plate