Feature:1. Made of high quality rubber and plastic material, sturdy, durable and long service life.2. Applicable to all DSLR cameras, video camera, DV, HDV, highdefinition camera.3. Simple design, light and compact, easy to carry and use, convenient and practical.4. Strong practical function, easy to adjust, suitable for any 4692mm/1.83.6in diameter lens, can be locked quickly.5. The flexible gear ring belt can better adjust the focal length, and the fixation of each point is extremely accurate.Specification:Item Type: Follow Focus Len Gear Ring BeltColor: BlackMaterial: Rubber + PlasticWeight: Approx.22g/0.8ozApplicable Scope: Diameter: Approx. 46-92mm/1.8-3.6in Lens.Package List:1 x Follow Focus Len Gear Ring Belt