2GC53-78 2GC53-D-3B-B 2GC53-D-3B-B/.187 FLATTED TABS 2GC53-NBL3 2GC54-73 2GC54-73/2 HEX 2GC54-73-XHT1 2GC54-78 2GC54-B3 2GC54-B8