Features: Referring to original for optimized, it is more practical than original, with improved detail and added quick board installation function. Using aviation aluminum, precisions machining, surfaces anodizing, spring buckles, knob locking, equipped with stainless steel antislip nails. The netweight of replacement foot is about 70g. According to original factory volumes, the bottom comes with quick installation plate, which is about 80mm long and reserved with 1/4 and 3/8 screw holes. The quick release board adopts AS standards and for standard gimbals. Scope of application:for 500mm f/5.6E VR lensfor 70-200 f/2.8E VR lensAt present, it is not for 70-200/2.8G lens during testings. Specifications: Materials:Aluminum Color: Black Package Includes: 1PC Quick Release Plate note: Please allow 0-1cm error due to manual measurement. makes sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item.