Model K-6: With 1/2" hole
Model K-64: Crimp-on connections(K-4 stud)
Model K-64A: Screw-on connection(K-4A stud)
USe 3-Way Mounting Brackets for single or dual antenna installation on your car, truck, van, motorcycle, or motorhome. Mounting clamps adjust for horizontal or vertical rails or mirror brackets, or use without clamps for installation on flat vertical surfaces. Allso available in stainless steel models SS-64 and SS-64A.