10mm-12mm Air Line Disconnect Tool (1) DT1012 disconnects 10 and 12mm air line and other push-In style fittings with ease..Use on air system connections for heavy-duty trucks, brakes, suspension, steering, engine, transmission and more!.Angled ends provide maximum leverage including within hard-to-reach areas.Numerous industry applications including automotive, chemical, food processing, semiconductor and printing.Compatible for use with SUR&R products including AB25 Air Brake Repair Kit and K555 Nylon Fuel Line Union Assortment.Tool works for sizes 10mm and 12mm DT1012