Terminal blocks that are cut out of one solid piece of brass, designed to distribute power. These machined bus bars are for when you want to distribute power through a project and are ideal for robots and LED pixel grids where you have tons of current and a lot of loose wiring to control. Each bus has 7 holes bored out of a chunk of brass. There are screws that can cinch down any number of wires. Since its meant for power distribution, the wires should be 20 AWG or larger (thinner wires will slip out). You can use any larger wire, the holes are 6mm diameter!