This stair climbing dolly has a 440 lb capacity, making it ideal for moving heavy loads up and down stairs. The 6-wheel design provides smooth, stable movement on staircases, reducing strain on the user. The rotating wheel system allows the hand truck to roll over steps without lifting.The telescoping handle adjusts to different user heights for comfortable operation. The 2 in 1 folding design allows the dolly to be used on flat surfaces as well as stairs, making it versatile for apartments, offices, moving jobs, or delivery work.This climbing hand truck is intended for residential and light commercial use. For best results, secure loads evenly and use straps (if included) for unstable items. Do not exceed the 440 lb capacity.Whether you need a stair climbing dolly for moving boxes in a walk-up apartment, delivering appliances to upper floors, or transporting equipment in a building with stairs, this 6-wheel folding hand truck with telescoping handle offers a durable and efficient solution.