This high-quality quick release plate can be used as a replacement for Manfrotto 577, compatible forManfrotto tripod. It features different mounting options for your camera and tripod. Features: This high-quality quick release plate can be used as a replacement for Manfrotto 577, compatible forManfrotto tripod. Comes with one 1/4" and one 3/8" screw for your camera or camcorder mounting. With two 1/4" and one 3/8" screw holes at bottom for ball head, tripod or camera dolly mounting. The base features horizontal & vertical three shooting gradienters for better calibration. The quick release sliding plate is compatible with for Manfrotto 501PL and 501PL (long). Features solid locking screw, safety pin & anti-skid pads on the plate, providing you quite reliable mounting of your camera. Made of precise CNC machine with metal construction, sturdy and durable. Specifications: Brand: Andoer Compatible: with for Manfrotto 577 Item Size: 9 * 8 * 1.5cm / 3.5 * 3.1 * 0.6in Item Weight: 247g / 8.7oz Package Size: 10.5 * 9.5 * 9.5cm / 4.1 * 3.7 * 3.7in Package Weight: 301g / 10.6oz Package List: 1 * Quick Release Plate