UTG Hunting Integral 25.4mm 1\ Ring 11mm Rail Mount For Rifle Laser Scope Sight Description: Length:100mm (3.94 inch) Ring:25.4mm Rail: 11 mm Material: Aluminum Package: 1x Scope Mount 1x Allen Key Features details : Precision Machined from Aircraft-grade aluminum alloy with anodized black matte finish Complete with stop-pin for rock solid application Ring base designed with locking Hex screws to tightly fit on mounts with airgun/.22 dovetail dimensions Reversible locking plate to fit full range of airgun/.22 rails 38mm bidirectional Offset provides extended and comfortable Eye relief