Sold as 4 UNITS at $5.15 per unit. (1 unit = Cd/2.) 1/2" bore. For 1-1/8" up to 2" bulb width. 2 bolts, 2 nuts & 2 9/16" spacers/card. Blister card. Manufacturer number: AC-ASB-225. SKU #: 72557. Country of origin: Taiwan. Distributed by Arnold Corporation.