Original Webco, curved, finned alloy rocker box oil feed to fit the unit Triumph 650 and 750cc models such as T120, TR6, T140, TR7. This is ideal for a Triton or Cafe Racer and can be fitted to pre-unit engines with a 9 stud barrel and cylinder head; one of the common modifications made to pre-unit engines. The front of the billet aluminium rocker feed is curved. The feed is at the centre of the back of the oil feed but the spigot is missing. Webco Inc is cast into the back of it. The hole centres are at 5 1/8 inches (130 mm).