Note: The load capacity can reach 6-10 kilograms. Tripod and Camera are not included. Description: Telephoto lens support, wheels center diameter 4.6 centimeters/ 1.8 inches, designed for big lens. Camera position is horizontally moveable for double clamp design. Height adjustable to suit different Medium and Long-Focus lenses. 1/4 inch screw Quick Shoe Plate is equipped for users to install the camera quickly. CNC aluminum alloy construction, can support 6-10 kilograms/13.2-22 pounds heavy load; Designed with surface oxidized treatment, more durable. There are both 1/4inch and 3/8inch thread on the bottom for mount on tripod/photography head directly, and the dual sided neck is compatible with Arca-Swiss type mount. Specifications : Material: Aluminum Alloy Long Base Plate: 20x3.8x1.2centimeters/7.87x1.49x0.47 inches Y-Bracket Size: 13x3.8x1centimeters/ 5.12x1.49x0.39 inches Wheel Center Distance: 4.6 centimeters/ 1.8 inches Wheel Diameter: 2.6 centimeters/1.02 inches Double Clamp Size: 5x5x3centimeters/1.97x1.97x1.18 inches Quick Shoe Plate Size: 5x3.8x1centimeters/1.97x1.49x0.39 inches Item Weight: 380grams/0.84 pounds Package Contents: 1x Telephoto Lens Support Bracket 1x Quick Shoe Plate