BIG RED Weld-On Swivel Trailer Jack 2,000 lb Capacity ATR39003R Zinc-Plated Steel 10½–20½ in Travel

The BIG RED ATR39003R is a weld-on swivel trailer jack that raises and lowers trailers up to 2,000 lb with a zinc-plated, corrosion-resistant steel design and an adjustable 10½"–20½" travel range.

This compact, heavy-duty jack is built to be welded onto a trailer tongue pipe bracket and folded away for travel. With a top-wind handle and fixed base, it gives you smooth, fast cranking and a secure mount for boats, utility trailers, car haulers and other light trailers. Zinc plating protects the steel finish from rust, and the straightforward design keeps maintenance minimal.

How much weight can this trailer jack safely support?

The ATR39003R is rated for a 2,000 lb (1-ton) static lift capacity, suitable for most small trailers and equipment. Use within that limit to ensure safe operation and avoid side-loading that can damage the jack or trailer tongue.

• Rated lift: 2,000 lb (1 ton)
• Best for small utility, boat, and car trailers
• Not intended for continuous heavy commercial towing beyond rating

What height range does the jack cover and how does adjustment work?

The jack adjusts from a retracted 10½" (267 mm) to an extended 20½" (521 mm), giving roughly 10" of vertical travel. Height changes are made by cranking the wind handle at the top; the swivel and fold functions allow compact storage while towing.

• Retracted height: 10½" (267 mm)
• Extended height: 20½" (521 mm)
• Top-wind handle provides fast manual adjustment

How is the jack mounted and will it stay secure while driving?

This model is designed for a weld-on pipe bracket: you weld the collar or bracket onto a 3"–4" trailer tongue pipe, then slide and pin the jack into place. Once welded correctly and pinned, the jack folds up and locks against the tongue for travel, providing a secure mount.

• Fits 3" to 4" diameter trailer tongues
• Weld collar required for permanent mounting
• Swivel/fold feature keeps jack stowed while driving

What materials and warranty come with the jack?

The body is made from steel plated with zinc to resist corrosion and extend service life in outdoor conditions. BIG RED backs the product with a limited 1-year manufacturer warranty covering defects; normal wear, misuse, or improper installation are typically excluded.

• Zinc-plated steel for rust resistance
• Fixed base for stable ground contact
• Limited 1-year warranty from BIG RED

Who this is for: The ATR39003R is a practical choice for DIYers, trailer owners and small-fleet operators who need an affordable, durable weld-on jack for occasional to regular trailer use. If you tow light loads, want a low-maintenance lifting solution, and can provide a welded pipe collar on a 3"–4" tongue, this jack delivers straightforward operation, dependable lifting within its 2,000 lb rating, and compact stowage for travel.