$10.81Gardner Springs Extension Spring: 0.187" OD, 2.33 lb Max Load, 2.91" Extended Length, 0.023" Wire Dia - 1.56 lb/in Spring Rate | Part #E3CMSC Industrial Direct- $7.90Gardner Springs Extension Spring: 0.187" OD, 2.57 lb Max Load, 3.28" Extended Length, 0.023" Wire Dia - 1.35 lb/in Spring Rate | Part #E3C-SSMSC Industrial Direct