LOAD CAPACITY & DURABLE MATERIAL: Crafted from premium Q235 carbon steel, this jack post for beam support boasts a 10000lb load capacity, suitable for heavy-duty support tasks in attics, roof beams, and high terraces. Unlike alternatives that fail under heavy loads, our house jacks for lifting and leveling provides reliable, long-term support for various structural needs. It can deliver consistent performance for both professional contractors and DIY enthusiasts RUST PROOF SPRAYING: Features anti-rust spraying paint that forms a dense protective layer on the surface. This adjustable jack post house maintains its sleek blue appearance and structural integrity. Unlike similar products with inferior paint that peels off easily, leading to rust and structural weakening, our heavy duty jack post eliminates the need for frequent maintenance or replacement due to rust damage, making it a cost-effective choice for both indoor and semi-outdoor support tasks FLEXIBLE BIDIRECTION THREAD ADJUSTMENT: House floor jack base adopts M27 thread combined with positive and negative thread principles, allowing quick height adjustment by simply rotating the handle. The operation is effortless-no additional tools are needed, and even users with limited experience can easily adjust to the desired height, then lock it securely with the hex nut. Unlike competitors' floor jacks for houses that rely on cumbersome one-way threads, our bidirectional thread adjustment saves time and effort ADJUSTABLE AFTER FIXATION: Boasts a unique design that allows seamless height adjustment by rotating the handle, even after fully fixed. This crawl space screw jacks feature addresses a major point-most can only function as fixed support rods and require re-installation to adjust height, which is time-consuming and labor-intensive. Our house jack eliminates the hassle of reattaching components, suitable for projects that demand on-the-fly height adjustments without compromising stability REINFORCED BASE FOR MAXIMUM SAFETY: The screw jacks base is engineered with a 0.16IN thick plate plus 0.07IN high support ribs, forming a robust 5x5 inch base structure that prevents deformation, sliding, and collapse caused by uneven surfaces. The heavy duty house floor jacks reinforcing ribs significantly enhance the base's load-bearing capacity and stability - a common safety hazard highlighted in reviews of products LIMIT OBSERVATION WINDOW SECURE WELDING: Equipped with an observation window that prevents over-lifting and potential detachment-a safety feature missing in many products. The house jacks for leveling window provides visual cues to avoid excessive height adjustment. Additionally, we use AWS E8018 welding and argon arc welding, which delivers superior strength and durability. This welding combination ensures tight connections that resist cracking and deformation under 10000lb loads VERSATILE SIZE FOR MULTIPLE SCENARIOS: Small house jack features an adjustable range of 4.5-6.5 inches, making it versatile for a wide range of applications, including attics, roof beams, high terraces, stair platforms, and other narrow spaces. The floor joist support jacks compact design fits seamlessly into tight areas where larger support tools cannot reach, while the adjustable range caters to various height requirements. Constructed with 1.65in/1.41in diameter tubes with 0.1IN wall thickness LIGHTWEIGHT SECURE PACKAGING: Weighs only 2.72lb per unit, making it easy to carry in tight spaces like attics or stairwells. Despite the leveling jacks' lightweight design, it maintains a 10000lb load capacity. Each unit is packed in thickened cartons that provide shock absorption and protection during transportation, preventing dents or structural damage. Unlike others with flimsy packaging that arrive damaged, our thickened cartons ensure the house jacks reach you in perfect condition WIDE RANGE OF APPLICATIONS: Suitable for leveling floors, lifting beams, supporting structures, and adjusting height under load. Can be used for house renovation, porch repair, foundation leveling, and crawl space shoring. Designed for homeowners, DIYers, contractors, handymen, and structural repair specialists. Capable of holding 10000 lbs, preventing sagging, stabilizing mobile homes, and resisting rust in various environments PROFESSIONAL GRADE CONSTRUCTION: Compatible with bottle jacks, beam plates, safety pins, and shoring systems. Used by builders, RV owners, and farm owners for home improvement, structural engineering, and DIY projects. Provides adjustable support column functionality as a screw jack system for permanent structural support in crawl spaces, under porches, in basements, attics, and garages during renovation or after storm damage Introducing our blue carbon steel lifting column, a reliable solution for attic, roof beam, and stair landing support needs. With a 5x5 inch base (0.16IN plate + 0.07IN support ribs) and 1.65/1.41inch diameter tubes (0.1IN wall thickness), it offers unmat