8IN TRAILER JACK BLOCK - FITS UP TO 9IN ROUND JACK PAD (EACH)

Built-in magnets instantly attach to the jack, so there is no need to double-check and adjust each jack block. A 2-1/2 recessed post hole works great with post jacks Stackable for extra height (no more than 2) Weight Rating & Specs Each 8" Trailer Jack Block is rated to up to 8,000 lbs or 1,500 lbs when double stacked Each 4" Trailer Jack Block is rated to up to 30,000 lbs or 20,000 lbs when double-stacked 12 diameter base, 10 diameter top Top of the jack block includes a 9-1/8 diameter recessed pad and a 2-1/2 recessed post hole for post jacks Weighs 5.3 lbs Made in the USA Covered under lifetime warranty.

• Easy Handling: Designed with finger holes for effortless positioning and handling, even in tough outdoor conditions.
• Heavy-Duty Support: Rated for 6,000 lbs single stacked and 1,500 lbs double stacked, providing stability for RVs, trailers, and motorsport equipment.
• Magnetic Alignment: Features built-in magnets on the top for easy and secure alignment under jacks, simplifying the setup process.
• Robust Dimensions: Measures 8" tall with a 12" diameter base and a 10" diameter top, ensuring a stable foundation on various terrains.