Monard aluminium finned rocker box oil feed, with the oil feed at one end of the oil feed. This has 4 fins with the Monard name in the centre of the fins. It is 1 1/4 inches (32mm) deep. The hole entres are at 5 1/8 inches (130 mm). It is suitable forTriumph 650cc and 750cc twin cylinder engines - T6, T100 pre-unit, T110, T120 and T140.