John Dow SC-2 Seat Covers 1.0 mil - Premium Roll of 200. John Dow PR8-700 Fluid Evacuator Flexible Probe 11/16" x 27". John Dow PR8-1500 Fluid Evacuator Flexible Probe 13/16" x 59". Roll of 500. Made of clear polyethylene they are tough enough to hold worn-out parts and keep them off the carpet or upholstery.