Black ferrule with a large blue ring fits standard parallel tip golf shafts.  Pre-sized outer diameter (OD) for a better fit. Sold 12 per package.
Sizes:
Iron Ferrule - 13.6mm OD (fits stainless irons and hybrids)
Driver Ferrule - 12.6mm OD (fits titanium drivers)
Fairway Wood Ferrule - 12.2mm OD (fits stainless fairway woods)
Driver and fairway have 0.335" ID and iron is 0.370".
 
Model #
Weight
UPC
FR1022-001
0.03
 
FR1023-001
0.03
 
FR1023F-001
0.03