For over 40 years, Happijac has been producing the highest quality camper jacks in the RV industry. Since 1963 they have conducted extensive camper jack research, testing, and development. With a firm commitment to manufacturing the safest, highest quality camper products, Happijac Company has reinvented the camper jack and is revolutionizing the industry with the first comprehensive and fully upgradeable line of camper jacks. All at an affordable price!