Sold as one unit. (1 unit = 5 each.) Single. 2" sheave dia. 3/8" max. rope size. 100 lb. working load limit. Steel body and die-cast zinc sheave. Zinc plated to protect against rust & corrosion. Powder metal bushing to extend pulley life and provide smooth operation. For indoor or outdoor use. Mount with (3) #12-1-1/2" screws or #10 bolts with nuts and washers. References National No. 233- 254. Bulk. Manufacturer number: T7550502. SKU #: 5308069. Country of origin: (TBA). Distributed by Campbell Chain/Coopertools.