HBFBDRCT Folding Hand Truck, 165lbs Capacity Lightweight Portable Folding Dolly Multi-fuctional Foldable Hand Cart Heavy Duty Utility Cart for Home Office and Travel Use (Black 2 TPR Wheels) - Amazon.com
Mickey Spring Bolt Latch (Hand Truck Rack Lock Pin) | Mickey Parts
Uline Convertible Hand Truck Polyurethane Caster - 5 x 1 1/4", Swivel H-1363-SWCA - Uline
Kit to allow nose plate to fold and lock - 302544
Handle Latch and Lock Assembly
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File:Hand truck lock Ford F350.jpg - Wikimedia Commons
Glad Hand Lock – Metal Body
Heavy Duty[SWIVEL WHEEL w/LOCK]Platform Hand Truck Foldable Cart Trolley Dollies | eBay
SNAP-LOC 1,500 lbs. Capacity All-Terrain Professional E-Track Panel Cart Dolly in Black SL1500PC6B - The Home Depot
Hand Truck Aluminum Single Grip 6" Handle - 301127