An air tool storage device includes a mounting plate with axial shaft projecting therethrough for receipt of opposed flanged circular retainer members that are spaced apart so as to receive at one radial position an air tool disconnect plug. A body member within the space between the opposed circular retainer members may be rotated to align outwardly extending radial pins with the notches of the retainer members aligned so that disconnect plugs may be positioned on the device or removed from the device.