Ohuhu 1"/2PCs High Profile Picatinny/Weaver Rings Precision machined from high grade Aluminum Alloy, light weight, sturdy and durable Fits all Picatinny/Weaver rails of 1"(25.4mm) Friendly Hex Screws with retention features. Easy installation Full length locking plate to guarantee easy installation and secure fit [2-pack] Great quality at most affordable price