Knott caravan & trailer anti-snake stabiliser hitch from Western Towing
Trailer Stabilizer — Rice Equipment Co., Loading Dock & Door Service
POD Trailer stabiliser kit for Overhead Camper - Trailmaster Industries
Austlift Mobile Trailer Stabiliser SWL50T | Austlift
Amazon.com: Trailer Stabiliser Legs, Easy To Fold High Strength 520mm Maximum Height Compact 105mm Minimum Height Trailer Parking Support for Caravans : Automotive
EGO TRAILER-Jambes de Stabilisateur de Caravane, Jambes de Stationnement, Hourhome, Accessoires de Remorque, Prix pour 1PC, 440-630mm - AliExpress