NMB ART-E, ART series male rod end bearings self-lubricating 3- piece, Left hand thread. Ideal in extreme conditions. Materials: Bearing: Stainless steel CRES 440C. Outer cage: Stainless steel CRES 410 with heat treatment. Coating: Teflon. Rod body: 4340 steel with heat treatment and surface coating. Rod end bearings are used on the ends of cylinders, linkages, shafts and rods where an articulating joint is needed, they take up angular misalignments between connecting components. Benefits include long service life, high reliability and low maintenance. Applications are across many industry sectors.