The adjustable hose clamps of the mast holder are made of stainless steel, which is robust, durable, corrosion resistant and rustproof. The base part of the mast bracket is made of plastic, but it can also remain stable for a long time and is not easy to damage. Our pole mount can be easily adjusted with a 360 degree rotation and a 90 degree tilt, which allows your camera to be flexibly positioned. It features a strong and secure angle lock that allows your camera to stay in the same position. The universal rod holder can flexibly adjust the ring diameter. The diameter can be from 1.96 inches to 7.87 inches (approx. 5 cm - 20 cm), so that your camera can be installed safely. With our rust-proof mount, the camera can be mounted high, reducing man-made damage and extending the life of your camera. We offer you 4 adjustable stainless steel hose clamps, which are available in diameters 50 mm, 100 mm, 150 mm, 200 mm. The different sizes of the hose clamps can be easily adjusted to different diameters of posts, poles, tree trunks or pipes, giving you maximum flexibility. You can install your security camera anywhere you want. The installation of this mast bracket is very simple. All you need to do is insert the adjustable ring through the base, attach it to the pole and tighten it - no drilling required