The Hazet 2169 oil filter socket with 3/8" square drive, 27 mm outside hexagon.
14-point - 74.4 mm
It fits the oil filter on an oilhead BMW motorcycle (R1150 GS Adventure) and also the two oil filters on a Porsche 911 Carrera (993).
When an oil filter is stuck on (happened once), the filter socket has a tendency to slip over the facets on the oil filter. The six quarter-inch holes were drilled into the filter socket so that sheet metal screws could be screwed into a "stuck on" oil filter, thereby fixing the oil filter socket to the oil filter.