Bolt for Clutch/Flywheel known to fit the following:
Ferrari:
208
246
288
308
328
360
400
412
430
456
512 BB, BBi, M, TR
550
575
599
612
Enzo
F40
F50
Mondial 8, 3.2, QV
Testarossa
Maserati:
GranSport
GranTurismo
Quattroporte
Ferrari/Maserati part # 201755