This Three Prong Hook by Hafele pivots independently and is easy to install. Each hook is constructed from zinc and is available in different finishes: Dark Oil Rubbed Bronze and Matt Aluminum. To install, remove the vertical pin and remove hooks to access the mounting holes: re-stack the hooks on top of each other and reinsert the pin. The mounting holes are centered on 32mm (1 1/4”) vertically. This three prong hook has an overall size of 1” W x 2 5/8” D x 3” H. Ships via UPS/FedEx Ground.