Do these blocks nest or are they solid?

OX BLOX Jack Blocks are designed to stack and lock in place on top of one another. However, they are not solid and do not nest. The underside of the blocks has heavy duty cross ribs that go the entire height of the block to increase load capacity.

Will the foursquare prongs on the aux block fit into the four holes on a yellow Camco leveling block?

No! Don't use OX BLOX with Camco Yellow blocks! They are NOT compatible. Only use OX BLOX with OX BLOX.

How much will it support double stack

10,000 lbs. Double stacked the max weight is the same as a single OX BLOX jack block. I stack three OX BLOX jack blocks to support my personal trailer frame. Of course you want to make sure you’re on stable level ground when stacking. These blocks are super heavy duty, but they do not defy the laws of physics.

What happened to metal plate in tongue jack hole, just curious since i have 5 with it & 4 without now?

Early on a small number of OX BLOX jack blocks were offered with a stainless steel plate in the post hole. However we discontinued the metal plate early on after receiving customer feedback suggesting the metal plate was not really valued. If there is enough interest we would definitely consider offering it again as an option or add on.

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OX BLOX Heavy Duty Trailer Jack Block - 10,000 lb Capacity - Made in USA

OX BLOX Heavy Duty Trailer Jack Block - 10,000 lb Capacity - Made in USA

Product ID: 353793321

Details

Brand
EKON
Color
Black
Load Capacity
10000 pound
Material
Plastic
Vehicle Service Type
RV Trailer

💪10,000 lb load capacity

🧱Stackable for custom height

♻️100% recycled, durable plastic

¥33306

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Elevate your trailer game with the toughest, smartest jack block on the market!

UNMATCHED STRENGTH - Supports up to 10,000 lbs per block—built for the heaviest trailers and jacks.
CUSTOMIZABLE HEIGHT - Stack multiple blocks safely to achieve perfect leveling on any terrain.
PORTABLE PRACTICAL - Lightweight with built-in handles for effortless transport and compact storage.
ROCK SOLID STABILITY - Patented design eliminates wobble on gravel, grass, dirt, or pavement—campground confidence guaranteed.
ECO FRIENDLY DURABILITY - Made in the USA from 100% recycled plastic, UV and weather resistant for years of rugged use.

The OX BLOX Heavy Duty Trailer Jack Block is a premium, American-made leveling and stabilizer block designed to support up to 10,000 lbs. Its patented, wobble-free design ensures stability on any surface, while stackability offers customizable height for perfect leveling. Crafted from 100% recycled plastic, it combines eco-conscious durability with portability, making it an essential upgrade for RV and trailer owners seeking reliable, long-lasting support.

Specifications

ASIN	B09DMM51FP
Best Sellers Rank	#7,999 in Automotive ( See Top 100 in Automotive ) #20 in RV Jacks & Stabilizers
Brand	EKON
Brand Name	EKON
Color	Black
Compatible with Vehicle Type	RV, Trailer
Customer Reviews	4.8 out of 5 stars 1,971 Reviews
Included Components	Comes with housing
Item Dimensions	9.29 x 11.89 x 6.5 inches
Item Highlight	RV Leveling Blocks & Stabilizer Pads; 100% Recycled Plastic; For Tongue Jack, 5th Wheel, Camper, Travel Trailer & More
Item Weight	8.8 pounds
Load Capacity	10000 pound
Manufacturer	EKON
Manufacturer Part Number	EKJS
Manufacturer Warranty Description	2-Year Manufacturer Warranty
Material	Plastic
Material Type	Plastic
Minimum Height	6.5 inches
Model Number	EKJS
Number of Items	1
Style Name	Tongue Jack
UPC	860007379703
Unit Count	1 Count
Vehicle Service Type	RV, Trailer

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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¥33306

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Very reliable shop with genuine products. Will definitely buy again!

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