DETAIL INFORMATION -  UTG Keymod Sling Swivel Adaptor for QD Sling Swivel Applications -  Precision Machined from Aircraft Grade Aluminum with Hard Anodizing Matte Back Finish -  Innovative Compact, Lightweight, Super Low Profile Keymod Base with Made in USA Keymod Nut for Tight Fit and Max Strength Locking Strength -  Compatible with Standard Keymod Slots on Keymod Rails to Allow Flexible Sling Attachment without Additional Picatinny Conversion -  Accepts any Quick Detach Sling Swivel with 0.37" Diameter Swivel Stud - Simple and Friendly Installation, No Gunsmith Required -  Package Complete with Installation Screws and Tools Material: Aluminum Height: 0.24" Length : 1.27" Weight: 0.3 oz Color: Black