Stem Spring, Compatible Grainger Part Number 2EVU8, Compatible Mfr. Model Number 2304-001-001, For Use With Acorn Showers, For Use with Series Acorn Shower Penal-Trol(R) Valves, Stainless Steel, Acorn Wash-Ware(R), Size 1 11/16 in H x 7/16 in Dia, Wash Fountain Hardware, Springs, Package Quantity 10