"Easily roll up to 650 lbs over an elevated curb or sidewalk with a hand truck or delivery dolly with a portable Kurb Ramp. Each curb ramp features a diamond tread surface for optimal grip on dolly wheels, a built-in handle for easy carrying, and a gradual inclined surface for a smooth incline. Supports up to 650 lbs. maximum capacity. Ideal for dolly carts, delivery carts, and hand trucks. Measures 23.5""L x 21.5""W x 6""H overall."