about this item EASY-TO-KEEP FOLDING DOOR HINGE STAND - Folding stand made of light-resistant aluminium alloy. It helps you easily repair or return bikes, surfboards or other bulky travel items to the roof or roof of the car, compatible with all types of camping vehicles or Jeep 4x4s, very practical for climbing on the roof of the car or placing tools on the ceiling Robust and durable, this door can withstand up to 500 kg 510 lb to access the roof or shelf of the car. Not a problem for big men handling bulky items. CAR DOOR OPERATION WITH SAFETY HAMMER FUNCTION: The safety hammer design provides a powerful tool for survival in an emergency . Product Do you always worry about cleaning things off your car? Have you ever had problems loading things onto a roof rack? If so, then our step will be your best choice Features: Foldable design - easy to store, made from durable and lightweight aluminium alloy. It allows you to easily secure or transport bikes, surfboards or other bulky travel items on the roof / roof rack of the car. Safety hammer design: provides a powerful tool for survival in an emergency . It& 39;s large enough to fit all foot sizes. The non-slip design provides solid, secure support for your presence in the door, compatible with most SUVs or campervans. With Vehicle Doorstep, you can can place all your bulky items on the roof or the any problem to make the most of the space in the car and enjoy a wonderful trip with all the necessary items, as well as for you. Package: 1 x folding car sill Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin