Summary Just like my other chain but it has an inner hood that shields the wires. This hides them from view and will protect them from debris when used for things like CNC mills. Plus it just looks tidy. Don't bother downloading the assembled version, it's just there so you can see it together in Thingview. The Sketchup files are included so you can mod the end parts as needed to fit your application. Instructions String it together with 16 AWG multi strand insulated wire. Tolerances are very tight with this. Remove any high spots with a knife so it assembles.