Have a previous model 800 borrowed from brother and was immediately impressed. Has saved us when moving HUGE Tragerarbeit and certainly a lumbago - Gotta have it, even -perfect for general stuff. The Model 850 came quickly and was tip-Topp fine. The only difference to 800: the handle height adjustment is flexible / gridless at 800; in 850 it goes up or down. But this is not a problem, in general, the handle is always at the top anyway. Otherwise just as stable, easy to assemble and very sturdy. By snapping the Questütze behind the cart is very firm and larger items easily be tilted with one foot on this support and balance. When folded, it fits perfectly into the car. We are very pleased, therefore, 5 *!
