Item Type: Lens Zoom Grip Ring Product Material: Plastic Weight: Approx. 10g / 0.4oz Applicable Model: for Sigma 18-200 Package List: 2 x Lens Zoom Grip Ring Compatible: Camera lens zoom rubber is suitable for Sigma 18-200 Lens. Please confirm the model before use. Perfect Substitute: It is a perfect substitute for the original parts lens whose rubber cover is damaged, broken and unusable. Professional Tools: The shape and size of our lens zoom grip rubber rings are designed accurately and can work normally after correct installation. Professional Installation: It is recommended that the camera repair part be installed and removed by a professional repairman. Long Lifespan: This lens zoom grip ring is made of plastic material, lightweight, hard to crack, high temperature resistant, flexible, highly impact and scratch resistant.