UTG 1"/2 Pcs. High Profile Airgun Rings w/Stop Pin Features: - 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 Specifications: - Material: Aluminum - Pieces: 2 - Rail Type: . 22/Airgun - Profile Level: High - Ring Diameter: 1" - Ring Width: 21 mm - Max. Scope Outer Dia. : 67 mm - Screws Per Ring: 4