This incredible machine will transform the life of any person living with a disability who uses a wheel chair. Unlike a built in stair glide which only works in one location this amazing Japanese made unit actually drives virtually any wheelchair up almost any stairs and all in a transportable package, this is the Toyota of stair climbers, so cool to use, and well built, people will be amazed watching it in action. This allowed us to get my mother in and out of our house (and other places with stairs ) without the costly and unsightly modifications to our homes entrance, sadly she has passed and we no longer have need for the unit, although its such a cool piece of machinery I'm tempted to keep it. feel free to contact me for more info and a demonstration, the unit is in pristine condition and is over $7000 new.