1/2 in. Purple Ferrule, fits standard parallel tipped shafts. Pre-sized outer diameter (OD) for a better fit. Sold 12 per package.

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″