Shakespeare Style 81-S Stainless Steel Swivel MountShakespeare&';s Style 81-S Swivel Mount is a dual-joint, free-pivoting base mount for use with an appropriate Shakespeare upper bracket in deck or side mounting large or small antennas. The mount&';s versatile action fits almost any mounting location, and permits easy lowering of the antenna for clearing overhead obstruction. It requires a stand-off upper bracket.The Style 81-S Swivel Mount is included in the Style 410-R Mounting Kit. Stainless steel construction Standard 1" - 14 threads Specifications: Type: Mounting Brackets Box Dimensions: 4"H x 4"W x 4"L WT: 1.4 lbs UPC: 719441110529 Quick Guide (pdf)