3684.2 Andersen 4" Trailer Jack Block 2 Pack

• 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