Please see slides below to learn more about OZ davit cranes
Oz Lifting Products booth at AWRF 2016. The davit displayed here is made from lightweight composite material weighing in at under 90 pounds. More information on the davit crane can be found here
Assembly video here
The video below is a worker using the OZ composite davit to lift light fixtures on the stadium at Boston College. Note he is using the drill drive option to increase the speed of the lift