I was expecting a plywood-type material and perhaps misaligned screw holes, but I was delighted to find a high quality, attractive wood, easy-to-follow assembly instructions, all the parts I needed and all the pre-drilled holes perfectly aligned. It was a snap to put together!  It's very sturdy; my dog races up and down and it doesn't wobble at all.  I wish I'd bought this ramp a long time ago. It's great! And a great price and super-fast shipping.