The Yellow Jacket 41081 is a set of 2 complete replacement handle assembly rebuild kits (41143) for the Series 41 Manifold Replacement Parts. Replace both complete handle assemblies on your Yellow Jacket Series 41 Manifold with the Yellow Jacket 41080 Rebuild Kit. Kit includes a 2-pack of an assembled, piston with seal and orings, feed screw, retaining nut, handle and screw.