This kit contains: 20 #001 95 251 coupler knuckle shanks, 20 #001 95 295 coupler lip shanks, 20 #001 95 101 snap-together draft gear boxes, 20 #001 95 165 lids, 20 #001 95 522 shims, 20 centering springs, 20 00-90 screws, and 20 trip pins (enough parts to make 10 pair #1015 couplers)