iShoot Adjustable Lens Collar Base Replacement Foot Tripod Socket Combo IS-THRF856Compatible with Manfrotto 502/701 & Sachtler 6T/8T/10T/DV3+3/DV5+5 Fluid Head& Compatible with Canon EF 400mm F2.8L IS III USM, EF 600mm F4L IS III USMRF 400mm F2.8L IS USM, RF 600mm F4L IS USM & RF 800mm F5.6L IS USM,Main Features:1. The net weight of this combo with screws is about 285g, and the measured volume is about 160mm long x 50mm wide x 66mm high, including three parts;2. 1) The replacement foot is about 60mm long x 38mm wide x 48mm high, and the top adopts the original standard;2) the middle quick release plate is about 160mm long x 50mm wide x 12mm wide, reserved 18 screw holes, scales on the front, two-way design on the back; 3) the small plate at the bottom is about 62mm long x 45mm wide x 8mm thick;3. The tripod ring is made of Aviation Aluminum, CNC precisely machined, hollow-out weight reduction design, polished and surface anodized finish. The appearance and exquisite workmanship are much better than similar products made by mold;4. Quick release plate compatible with tripod heads includes:Manfrotto MVH400 series, MVH500 series, MVH600 series, MVH700 seriesSachtler FSB4/6/8, ACE series, FSB6T/8T/10T, DV 3+3/5+5 series5. Lens collar foot compatible with Canon lenses include:RF 400mm f/2.8L IS USMRF 600mm f/4L IS USMRF 800mm f/5.6L IS USMEF 400mm f/2.8L IS III USMEF 600mm f/4L IS III USMCan't be used for other lenses, please don't buy it if your lens in not in the use range.Package Includes:1 x iShoot Lens Collar Base Replacement Foot IS-THRF856(Note: The other items in the photos not listed here are for illustrating only, not included)