Very strong replacement wheels I bought for my Rubbermaid plastic work cart, the wheels were worn to the bone. The 2 mounting holes matched the existing holes in my car - I had to drill 2 new holes. A very strong chemical smell that goes away after a few days or even weeks. It cannot be stressed enough - these things smell really bad out of the bag. Glad I have a work cart in the shed Subsequent review 9/6/2018 Also, they smell. I figured the smell would dissipate, so I ended up sending them to the garbage heap. I found some unscented alternate bikes at my local HarborFreight shop.