Andersen Hitches Magnetic Jack Blocks 2-Pack — 4-Inch Lift, 30,000 lb Capacity, Fits up to 9-Inch Pads

These are Andersen Hitches 4-inch magnetic jack blocks (two units) designed to secure and elevate trailer or RV jacks with up to 30,000 lb capacity per block.

When you need a compact, dependable support for stabilizer or landing jacks at the campsite, this two-pack of magnet-equipped jack blocks offers strong holding power in a low-profile design. Each block is machined to mate with round jack pads up to 9 inches, includes built-in magnets that latch to metal jack pads, and is sized to provide 4 inches of lift — ideal when full-height blocks are too tall. Made in the USA and backed by a lifetime warranty, these blocks are intended for heavy rigs where reliability and quick setup matter.

How do these magnetic jack blocks speed up campsite setup?

With two blocks in the set and magnets that attach to round jack pads, you can position both front and rear jacks without juggling separate pieces. The magnets help the block stay in place as you lower the jack, cutting down repositioning and fiddling at the campsite.

• Two blocks let you support two jacks simultaneously for faster leveling.
• Magnets lock the block to round jack pads so they don’t slide away during lowering.
• Compact 4" height reduces time spent swapping between different block sizes.

Will these blocks handle heavy motorhomes and fifth wheels?

Yes — each block is rated at 30,000 pounds, making them suitable for Class A motorhomes, large fifth wheels, and heavy trailers when used per manufacturer instructions. The load rating provides a robust margin for supporting stabilizer or landing jacks on substantial rigs.

• 30,000 lb capacity per block supports heavy-duty RV applications.
• Designed for use with jacks and stabilizers that sit on round metal pads.
• Durable construction intended to withstand repeated campsite use.

What jack pad sizes and clearance situations are these best for?

These blocks fit round jack pads up to 9 inches in diameter, making them compatible with most common landing-pad styles. The 4-inch overall height is specifically useful where ground clearance is limited or when a small lift is needed rather than stacking taller blocks.

• Compatible with round jack pads up to 9" diameter for broad fitment.
• 4" profile ideal for low-clearance setups and modest leveling adjustments.
• Works well on uneven ground where minimal height adjustment is preferable.

How reliable and serviceable are these blocks?

Manufactured in the United States, these jack blocks come with a lifetime warranty that covers defects in materials and workmanship. Their magnetized design reduces wear from shifting, and the compact form factor simplifies storage and transport.

• Made in the USA to Andersen Hitches quality standards.
• Lifetime warranty for long-term peace of mind.
• Magnetic attachment reduces movement and repeated repositioning.

Who is this for? These Andersen Hitches 4" Magnetic Jack Blocks (2-pack) are aimed at RV and trailer owners who run large rigs and want a fast, low-profile solution for stabilizing or lifting jacks. They suit people who need reliable holding power without the bulk of taller blocks — owners of Class A motorhomes, fifth wheels, heavy trailers, and anyone who prefers quick magnetic attachment and American-made durability for regular campsite setup.