1. Durable and solid shaft: The jack features a blackcoated, robust surface with rustresistant and impactresistant properties, ensuring longlasting performance and the ability to withstand the wear and tear of motorhomes. The threaded core adopts a solid wave design, enhancing torque strength for smoother operation and greater durability. 2. safety: The dense thread design ensures firmness and stability, with compression performance and a safety factor. It effectively supports and stabilizes to prevent spring rebound. In emergencies, this scissor jack enables quick and effortless tire changes. 3. Stable construction: The widened and thickened base provides a strong grip even on uneven terrain. The grooved fixation securely holds the vehicle in place during use, preventing slippage. Made of thickened metal material, it offers strength, resisting bending or damage, with a maximum load capacity of 1.7T, making it suitable for trailers, RVs, and motorhomes. 4. Universal compatibility: This portable car jack boasts an ergonomic and stable design, ensuring ease of use and portability. The hand crank mechanism reduces effort when lifting vehicles, making tire changes a breeze. It is suitable for trailers, motorhomes, and other small to mediumsized vehicles.