RUPP Marine Antenna Mount Support w/4-Way Base Spacer & 1.5" Collar Standard. 5" Collar A perfect blend of form and function Antenna Mounting Systems by Rupp combine good looks with innovative designs. The locking collar holds antenna securely yet unlocks conveniently for lowering. Made of forged and anodized aluminum for strength and long lasting beauty. Standard supports are designed for easy mounting to cabin sides. Specifications for RUPP Marine Standard Antenna Mount Support w/4-Way Base Spacer & 1.5" Collar: Manufacturer: RUPP Marine Color: Black Fabric/Material: Aluminum Features of RUPP Marine Standard Antenna Mount Support w/4-Way Base Spacer & 1.5" Collar Base: Oval 4-Way Spacer: 4.5" Bolts: 2-6" Package Contents: RUPP Marine Standard Antenna Mount Support w/4-Way Base Spacer & 1.5" Collar RUPP Marine PAK-0002: Antenna Mount Support w/4-Way Base Spacer & 1.5" Collar Standard