Close Coupler Heads for Standard Coupler Pockets (50 pc.)Item No: 72000 Highlights Close coupler heads for locomotives and cars with a lower buffer height. Contents: 50 of item number 357874 close coupler heads. They are for use on locomotives and cars with standard coupler pockets (NEM 362) and a guide mechanism, as well as on locomotives and cars with a lower buffer height in accordance with NEM 303. These coupler heads are compatible with standard couplers (NEM 360).