The MFJ-336T Goliath Tri-Magnet Mount has three super strong 5-inch magnets bolted to 1/4 inch triangular mount. It has 17 feet of coax cable. CAUTION: Once its on, its difficult to get it back off! The MFJ-336T has a 3/8" connector.
Recommended for the MFJ-336T, MOUNT, 5~ TRI-MAG, 3/8~ MOUNT