134717 Model:N/A Quantity:1 piece(s) per pack Color:Black Material:Aluminum alloy Suitable Caliber:21 mm Specification:great for your gun Packing List:1 x Sling swivel mount Dimensions: 1.61 in x 1.65 in x 0.79 in (4.1 cm x 4.2 cm x 2.0 cm) Weight: 1.94 oz (55 g)