Features: Made of quality materials, wear-resistant and corrision-resistant, steady and durable. Easy to use and install, just screw on your tripods and monopods to use. Flexible round ballhead, multi-angle adjustment, which can be rotated 360 degrees to make photography easier. Replacement feet are suitable for almost all standard 3/8 camera tripods and monopods, and are professional photography accessories. Anti-slip large base gives you more grip and for extra stability, for ideal for uneven or smooth surfaces. Specifications: Material: Plastic+Stainless Steel Color: Black+Silver Type: GSF34, GSF37, GSF50, GSF68(optional) GSF34: Approx. 34x53mm/1.34x2.09 inch GSF37: Approx. 37x56mm/1.46x2.20 inch GSF50: Approx. 50x55mm/1.97x2.17 inch GSF68: Approx. 68x55mm/2.68x2.17 inch Screw Interface: 3/8 Package Includes: 1 Piece Universal Rubber Foot Pad note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you mind. Due to the difference between different monitors, the picture may not reflect the actual color of the item.