Perfect strong locking mechanism!
The wheel cart is a must for the larger crates. I bought the 700 collapsible for airline travel for my German Shepherd mix. I was traveling alone with three suitcases, the crate and my dog. I would not have been able to do the journey without it.
Impact Dog Crate Wheel Cart
My wheels for my 450 stationary crate are awesome. Delivere4de as promised on time. Great customer service!!!!
Assembled it easily. Wish the cart came with a handle though.