This antenna mount is made out of high quality rust-free stainless steel AISI 316 A4. Resistant against seawater and uv radiation. The antenna mount can be fixed in almost any angle. Suitable for all ordinary gps and ukw antennas with a 1 inch thread. The antenna mount is equipped with a bottom plate which can be fxed by screws. Screws are not included in delivery. Length ( with grip ): 138 mm height: 115 mm diameter of drillings: 7 mm ( quantity: 4 ) weight: 658 g measurements of bottom plate: length: 92 mm width: 65 mm strength: 5-7 mm