GIVIMO 6000-lb Capacity Trailer Jack Blocks 4-Pack 9.65-in Square Stackable RV Leveling Blocks Polypropylene T30 Camper Stabilizer Pads with Drainage Holes and 8-in Support Height for Tongue Jacks Landing Gear Posts and 5th Wheel Trailers on Soft Ground

6000-lb Rating Per Block: Each molded polypropylene T30 block carries up to 6000 lb under a tongue jack, stabilizer foot, or landing leg when it sits on firm and level ground

Stackable 8-in Support Height: Blocks stack to build height on rutted or sloped sites, and a 9.65-in square face spreads jack load over soft ground rather than driving a foot straight down

Drainage Holes Shed Standing Water: Molded-in drainage openings let rain and snowmelt pass through instead of pooling under the jack foot, keeping metal feet drier and more rust-resistant

For Trailers Campers and 5th Wheels: A four-block set covers travel trailers, pop-up campers, motorhomes, and 5th-wheel landing gear parked on grass, gravel, soft soil, or hot asphalt

UV Oil and Tar Resistant PP T30: Injection-molded polypropylene T30 shrugs off UV exposure, standing water, high heat, oil, tar, and soil contact so blocks hold shape season to season

Specification: Quantity: 4 pcs; Material: Polypropylene T30; Maximum Capacity: 6000 lb per Block; Single Block Dimensions: 9.65 x 9.65 x 8.03 in / 245 x 245 x 204 mm; Support Height: 8 in; Features: Stackable with Drainage Hole; Net Weight: 20.39 lb / 9.25 kg; Package Dimensions: 26.65 x 10.24 x 10.24 in / 677 x 260 x 260 mm; Shipping Weight: 22.0 lb / 10.0 kg