Guardian industrial heavy duty traction portable curb ramp built tough for material handling and shipping dolly carts transitioning to an elevated surface. Each 27" X 27" Curb ramp features two built-in carrying handles for transporting, raised side rails to help keep dolly carts centered on the ramp, and a built-in attaching lip for a smooth transition from ramp to the elevated curb. An aggressive, large punch-plate, heavy duty traction surface provides maximum grip in any weather condition - rain, snow, mud or shine! The Guardian industrial curb ramp is a great solution for moving materials from raised curb surfaces up to 8" High. Maximum 750 lb capacity. Strong all-aluminum construction - Made in the USA.