The OXO HS-9 headset/headpart uses a semi-integrated system with steel material and ball retainer bearings.
OXO HS-9 Specifications
Top Size: 44 mm Outer Cup Diameter, 1-1/8" Oversize Threaded Cap
Bottom Size: 44 mm Outer Cup Diameter, 30 mm Inner Diameter (Crown Race)
Material: Steel (Black), Ball Retainer Bearing
Product Weight: +/- 170 grams
B2B Information (for Dealers)
Contents per box: 100 sets