With no predrilled mounting holes, these lugs are your go-to if you don’t know your screw distances yet, or if you’re using nonstandard screw sizes. Just drill holes where you need them and install with whatever screws work best for your application. Squeeze the barrel onto the wire with a compression tool for a permanent connection that stands up to heavy vibration, sudden shocks, and daily wear and tear. Compression lugs are a step up from set screw lugs when you need a physically strong connection, though set screw lugs attach to even larger wire.