Compatible with: Bike Porter Hitch, Freedom, Axis Steel, Axis Aluminum, 200/500 Series T-Rax, All Thelma racks, Cycle-On (Standard model), and T-Bones; Also compatible with 2" Hitch Receiver Size
• Secures rack to vehicle with theft-preventing lock
• Fits 2" threaded hitch-tite
• A must have to secure your hitch rack
• 5/8" thinkness for 2" hitch receiver size