Here you can see the safety latch that is spring-loaded, you are supplied with 100' of Kevlar laced string which attaches to the S-hook so you can deactivate the latch when you need to crank the tower down.
The next picture is a close-up of the roller system that allows the hazer to slide up and down the tower without the fear of it catch on a sectional bolt-head. This is an option but I would not want to trust the hazer sliding metal against metal and the chance it could get hung-up when fully extended.
Next we have the rotor shelf which is similar to a rotor plate that would fit inside of a Rohn 25G tower. Above this shelf is a similar plate that is drilled to accept a Yaseu Thrust bearing.
Here you can see the entire hazer and the rotor shelf and thrust bearing shelf. Since it is make of 100% aluminum it is light weight and easy to handle but it does take some time to assemble since there are 92 bolts to put in place and tighten up. A drill or impact drill makes things go a lot faster.
If you plan on ever buying one of these bookmark this link because the Glen martin instruction are nothing short of awful. My Hazer Building Experience