2 pack of 3" Roof Suction Cups. Use on Car, Truck, Boat, Trailer or Camper. Erickson Manufacturing has been producing tie-down straps and related products for over 25 years. As a manufacturer of tie-down and towing products in North America, Erickson Manufacturing strives to provide the safest products with the consumer in mind. Tie It. Tow It. Load It. Count on Erickson.