MetalTech 24 in. Adjustable Leveling Jack in Galvanized Steel with Base Plate for Scaffolding Frames M-MBSJP24H - The Home Depot
MetalTech 24 in. Adjustable Scaffold Leveling Jack in Galvanized Steel with Heavy Duty Base Plate and Wing Nut Screw (4-Pack) M-MBSJP24HK4 - The Home Depot
Lippert Ground Control 3.0 Electric 5th Wheel RV Leveling System w Touchpad and Remote - 4-Point Set Lippert Camper Jacks LC358590
Lifting & Leveling Jacks
RV Leveling Jacks vs. Stabilizing Jacks
Red Hound Auto 4 Telescoping Folding Trailer Stabilizer Jacks Swing Down 1000 Lbs Support Capacity Each for RV Trailer Camper Includes Handle and Mounting Screws - Walmart.com
Trailer Stabilizer Jack Power Conversion Kit 24210 - RV Parts Express - Specialty RV Parts Retailer