RadioShack (274-550) Panel Mount Safety Binding Posts to Banana Jacks Fits 0.1575" (4mm) diameter banana plug Mounts in a 21/64" (8mm) diameter hole Binding post hole diameter .0866" (2.2mm), up to 16AWG wire Sure-grip knurled housing for easy grasp One red and one black safety binding post; Rated 10A at 125VAC