Splice single and multiple copper (or aluminum) wires together safely and securely with Gardner Bender's heavy duty wire splices. In addition to creating a durable wire splice, you can also use the GPSA-2 to reduce wire gauge from one run to another, or use multiple smaller wires to connect to a larger single wire. Slotted set screws ensure proper wire compression on both sides. cUL and UL listed and made in the USA. Dimensions: 1-3/16" x 7/16". Two pieces per package.