BACHMANN WILLIAMS BAC78025 HO COUPLERS CENTER SHANK MED - 12

Fits most HO scale locomotives and rolling stock with built-in draft gear boxes (coupler pockets). With coil springs. 12 units, each unit with on pair of couplers. Units are joined together by perforation. E-Z Mate eliminates the problems and expense associated with separate coil springs. These couplers operate with a standard metal "glad hand" and under track magnet. Patent pending spring retainers. Compatible with all magnetically operated knuckle couplers. Installation instructions provided on each individual package unit.