Frame Lock Security Hanging Kits with T-Head Screws - 25 Pack - Anti-Theft Security Lock Hangers for Art in Museums, Art Galleries, Hotels and Restaurant - Supports Up to 15 Pounds - - Amazon.com
T-Screw Security Hangers | Picture Hardware
T Screw & Top Hooks Kit for Aluminium Frames 1 bag | Lion Picture Framing Supplies Ltd