Direct Drive for 1" shaft. Works with most commercial garage door. Ideal, Raynor, Genie, Wayne Dalton, Overhead Door, Clopay, Midland, North Central, Martin, CHI, Garage, Amarr, Industrial, Richard-Wlcox, Delden and many others. Chain hoist, includes 26' of hand chain, 1 chain keeper, 2 shaft collars and a 1/4" key Needs 5 3/8" minimum offset
