The Califone 1210AVPS Jackbox has ten positions featuring silver-plated contact points for better connection and moisture resistance. Made of rugged plastic the jackbox has skid-resistant pads on the bottom and two pre-drilled holes if permanent attachment is needed. Each position has individual volume control and 1/4 inch jack. The permanently attached cord is 5-foot with 3.5mm stereo and 1/4 inch plugs for connecting to audio source. Jackbox weighs 12 ounces and measures 2 inch H x 4-1/4 inch L x 4-1/4 inch D. 1 year warranty with school use.