TowWorks 79832 Keyed Alike 5/8" Trailer Hitch Lock with Extra Long 4-1/2" Span, Double Safety Tow Hitch Locking Pin for 3" Receivers and Adjustable Channel Mounts, 2-Pack - Walmart.com
Amazon.com: METOWARE Keyed Alike Trailer Hitch Receiver & Coupler Lock Kit fits Class III IV Receiver 5/8" Dia Pin Lock, 1/4” Dia 2-1/2" Trailer Coupler Lock for Latch-Type Couplers Latch-Type Couplers :
Amazon.com: CZC AUTO Trailer Hitch Receiver Lock Pin Keyed Alike 2 Pack 5/8 Inch Dia 4 Inch Super Extra Long Black Pin for Class III IV Hitches for Hitch Bike Rack Tray
Dexter Distribution - Trimax Receiver Lock & Lock For Trigger Couplers Keyed Alike TM31
Weigh Safe - WS8-2.5-KA - 8" Drop Hitch w/ 2.5" Shank (8K/18.5K GTWR)– Wholesale Home
5/8 Inch Keyed Alike Hitch Pin Lock for 2" Class III/IV Receiver Hitches (Sold per each, up to 10 locks keyed alike)
Amazon.com: METOWARE Keyed Alike Trailer Hitch Locks & Coupler Lock Set, 5/8" Dia 3-1/2" Long Hitch Lock Fits Class III IV Receiver, Dia 1/4" Trailer Tongue Lock with 3/4" Inch Span Fits
Dexter Distribution - Trimax Receiver Lock & Lock For Wide Lever & Yoke Couplers Keyed Alike TM32