Item Type: Lens Zoom Rubber Ring Material: Rubber Gross Weight: 8g / 0.3oz Applicable: for Sigma f 2.8 EX DG 24-70mm lens Package List 1 x Zoom Rubber Ring 1 x Focusing Rubber Ring Please check the product size and applicable lens model before purchase 1Applicable Model: This zoom rubber ring is applicable for Sigma f 2.8 EX DG 2470mm lens, please confirm the model before use. 2Perfect Fit: The shape and size of the lens focusing rubber ring are designed accurately, and it can work normally after correct installation. 3Stable Performance: The product is tested before delivery, and delivered after passing the test, it has stable performance and can be used safely. 4Replacement Parts: Made of pemium rubber, comfortable to grip, perfect replacement parts, replacing damaged original parts. 5Third Party Product: This lens repair part is a third party product, not an original product, but its performance is the same as the original part.