The GolfWorks Premium Designer iron ferrules feature a 6 ring design available in 7 different color options. Manufactured from stretchable material allows for the ID of the ferrule to be enlarged slightly to allow for the ferrule to fit onto both .370" and .355" iron shafts. The GolfWorks ferrules are Pre Washed with high gloss finish and have a 19 degree countersink allowing a cushion of epoxy to form between the top of the hosel and the inside of the ferrule to prevent shaft breakage. FEATURES Fits both .370" parallel and .355" tapered iron ferrules Length - .875" Outside Diameter - .550" Inside Diameter - .370" (9.4 mm) Pre-washed gloss finish 1 Dozen Ferrules