Rupp threaded antenna support with 6" pipe mount is a perfect blend of form and function. Ideal for tuna towers and tops, this antenna mount features a 1.5" locking collar to hold your antenna securely. Collar conveniently unlocks for easy lowering. Made of forged and anodized aluminum for strength and long lasting reliability. Antenna support comes with 4-way oval base. Forged and anodized aluminum stays strong Ideal for tuna towers and tops | Threaded Antenna Support With 6" Pipe Mount And 4-Way Base