PRW 1628980 SFI-Rated 24 lbs. 157 Teeth 0-Balance Billet Steel Flywheel for Ford 260-302 1964-95 Clutch patterns: 10 inch, 10.5 inch, 10.95 inch B&B - diaphram, 10 inch and 10.5 inch long, 10 inch diaphram, 10.5 inch Mustang diaphram with 8mm CAD engineered Precision CNC machined to strict tolerances Forgings are 1045 billet steel SFI certified