HO Kadee #634 Centering Spring #5 Style (NO.5®)
From Kadee:
HO-Scale Centering Springs #5 Style.
Metal Centering Springs for #3 (old style), 5, 9, 20-Series, 40-Series, 58, 118 (old style), 505, 506, 507 and 508 Couplers.
Package Includes:
(1) Dozen #634 Centering Springs #5 Style