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. Base not included. Forged & anodized aluminum stays strong Ideal for tuna towers & tops