The AMG500 Convertible Hand Truck/Platform Cart from Krane is a versatile tool for moving heavy loads – use it as a hand truck or convert it to a platform cart, and fold it up for easy storage when you're done.

Made of carbon steel 8" no-flat wheels and 4" swivel casters, the 500 lb capacity cart comes with integrated stair climbers that help greatly when navigating staircases or curbs. The fork of the hand truck serves as an end rail on the platform cart, but can also fold out of the way for a more open configuration. When not in use, the cart folds down small enough to fit in a typical car trunk, and stows easily at home or work.

https://www.bhphotovideo.com/c/product/1116162-REG/gruv_gear_amg500_convertible_platform_dolly_tilt_cart.html