The Curb Threshold Ramp is a heavy-duty way to get vehicles, carts, tractors or other wheeled devices over a curb or step. Use it to mount curbs. Mounting holes allow a secure fit or you can use them to bolt multiple units together to accommodate wheelchair access. The curb ramp is ideal for movers, delivery personnel or anyone who has difficulty negotiating curbs or steps. Durable and heavy-duty plastic material means this ramp is built to last.