Universal DC socket 5.5x2.1mm to plug connector size: 6.3 to 4.0 mm 6.0 to 3.0 mm 5.5 to 2.5 mm 5.5 to 2.1 mm 5.5 to 1.7 mm 4.8 to 1.7 mm 4.0 to 1.7 mm 3.5 to 1.35 mm Package includes: 8 x DC plug.