The appearance adopts a semi-circular design, with no obstruction at any of horizontal or vertical tilting 1/4 Threaded interfaces, powerful compatibility, compatible lens outer diameter up to 94mm. Equipped hexagonal tool, adjustable height of quick mounting plate, suitable for lens center to bottom distance of 36.7-50.7mm. Aluminum alloy, polishing, sandblasting, full of texture, beautiful and practical. Multifunctional expansion, with 1/4 3/8 cold shoe holes, can be connection to fill lights, microphones and other product. Base Size: about 65x50x15mm/2.55x1.96x0.59inch Colour:black Material:Aluminum Alloy Package Contents: 1 * Rotatable Collar Mount Plate Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.