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 #34; and one 3/8 #34; screw for your camera or camcorder mounting. With two 1/4 #34; and one 3/8 #34; 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