Chain Hoist, Manual Chain Hoist, Max. Door Height (Ft.) 18, Standards 1-1/4 in Bore, Includes (2) 1/4-20 Hex Lock Nuts, (2) 1/4-20 x 3 in Hex Bolts, (2) Shaft Collars, (4) 1/4 in x 1/2 in Tapping Screws, 1/4 in x 3/8 in Key, Chain Keeper Bracket, Wall Bracket