The ATI Damper is an aluminum crankshaft damper sized 7.074 with seven rear-pulley grooves and a two-ring configuration, offered at OEM size for Nissan GT-R applications. It matches the listed groove count and diameter for use on that vehicle where a factory-dimension damper is needed to interface with the rear pulley setup.
ATI Damper - 7.074 - AL - Nissan GTR - 7 Grv Rear Pulley - OEM Size - 2 Ring