Use this adapter for network GPS antenna mounts.
It’s easy to install, just drill three, 5/8-inch holes and fill with epoxy.
The brass rotating adapter is removable and locks in the azimuth direction.
The body is made of anodized aluminum with stainless steel 3/8 x 2-1/2-inch bolts.
Weighs 1.4 lb (0.61 kg)