Piston o-ring for:Gilson Pipetman Classic 2μL, 10μL (P2, P10)Rainin Classic 2μL, 10μL (PR2, PR10)Gilson Pipetman Neo 2μL, 10μL (P2N, P10N)Gilson Pipetman G 2μL (P2G)Gilson Pipetman L 2μL (P2L)Alternative to Gilson F161801, F144501, F144502, Rainin 400071, 17003387, 17003441.With 90002, alternative to Gilson P2 set F144861.With 90010, alternative to Gilson P10 set F144862.Made in the USA