This is a Full Flange Racing Wheel Hub (1″ or 1-1/4″ Bore)
Product Specs:
Full flanged aluminum racing wheel hub
Option of 1″ or 1-1/4″ Bore
1/4″ keyway
Dual bolt pattern for both 1/4″ & 5/16″ bolts
(3) Bolt holes on a 2-1/2″ bolt circle
3 Bolt Hole Pattern
2-1/2″ Bolt Circle
Note: If using these hubs with 2 piece rims, may need to use 5/16″ studs verse’s 1/4″ due to pinch bolt clearance