HOXWELL NBTS582-4 8-Inch RV Trailer Jack Blocks, 4-Pack

HOXWELL NBTS582-4 RV trailer jack blocks are a stackable plastic support set intended for RV jacks and stabilizers. The listing describes a 4-piece, 8-inch-high set with a carry bag, though the explicit component list names only a trailer jack block, so confirm the selected listing’s package contents before buying.

At a glance

Stackable blocks are presented as a way to build height on uneven ground and nest for storage.
The listing describes a built-in weep hole for drainage and a handle and rope for carrying.
Manufacturer copy claims a 40,000-pound gross vehicle weight capacity. This is a listing claim, not an independently verified rating.

Price

$107.99Save 23%

Reference price: ~~$139.99~~

Price checked: Nov 14, 2026

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Often bought together

HOXWELL 4PCS 8''H RV Trailer Jack Block with Bag, RV Stabilizer Blocks for Any Tongue Jack, Post, Foot, Round Square or Sciss

$73.99

Pros and cons

Pros

Stacking and nesting offer adjustable support height while helping reduce storage bulk.
The described drainage hole may help water and debris leave the block interior.
The listing says the blocks suit most tongue jacks, posts, feet and stabilizers.

Technical specifications

10 specifications

Identity
Brand	HOXWELL
Model	NBTS582-4

Dimensions and installation
Dimensions listed	12 x 12 x 7.87 inches
Weight listed	7.53 kg

Materials and protection
Material listed	Plastic

Use and load claims
Vehicle type	RV
Fit type	Universal Fit
Minimum height	8 inches
Listed load capacity	4E+4 Pounds
Color	Orange

What to know before buying

Listing details to confirm

The listing gives inconsistent dimensions: the technical details say 12 x 12 x 7.87 inches, while feature text says 12 x 12 x 8 inches and the title calls the blocks 8 inches high. Weight also differs between the listed 7.53 kg and feature copy’s 2.87 lb. The 4-piece title and carry-bag claim are not confirmed by the explicit contents list, which names only a trailer jack block. The 40,000-pound figure is described as vehicle GVW capacity, so do not treat it as a per-block load rating without clarification.

What’s in the box

Included

Trailer jack block

Who is it for?

A good fit for

RV owners seeking stackable jack or stabilizer supports for parking setups.
Buyers who want blocks that can nest for storage and have a stated carry handle and rope.

Less suited to

Buyers who need a clearly confirmed per-block load rating or a verified package count before purchase.
Buyers looking for wheel chocks or a complete RV leveling system, which are not established as included.

HOXWELL NBTS582-4 8-Inch RV Trailer Jack Blocks, 4-Pack · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.8 / 5 · 81 ratings

5 stars90%90%
4 stars6%6%
3 stars0%0%
2 stars2%2%
1 star2%2%

There is no customer review-summary text or aspect-specific feedback supplied. Aggregate ratings skew strongly toward five-star ratings, but include some low-star ratings as well. Those figures do not explain what customers liked or disliked, so they cannot confirm fit, durability, the load claim or the package contents.

Frequently asked questions

How many blocks are included?

The title describes four pieces, but the explicit included-components field names only a trailer jack block. Confirm the selected listing’s package count and bag inclusion before ordering.

What load can each block support?

The listing claims that the entire vehicle can have a gross vehicle weight up to 40,000 pounds. It does not establish a per-block load rating, so do not assume the figure applies to each block.

What are the listed dimensions?

The details give 12 x 12 x 7.87 inches, while feature text says 12 x 12 x 8 inches. Check the exact dimensions if height or fit is critical.

Can these be stacked?

Yes. The listing describes stacking multiple blocks for height and nesting them for storage. Use them only in a setup appropriate for your RV and jack.