1 1/8 inch threadless headset

Package contains 16 bearings

Seba CC Inline Skate Wheels work great for road skating

and hills to skating

Bones Swiss Ceramic Bearings 608 (8-Pack) Enough for 4 Wheels - Sale Proto 1 1/8 inch threadless headsetBones Swiss Ceramics are in a class by themselves. If you want the best there is, this is it. The Ceramic ceramic balls are much lighter, harder, stronger, and longer lasting than the finest steel balls. Includes: 8 Bones Swiss Ceramic Bearings Size: Standard 608 Serviceable: Yes Lubrication: Speed Cream *Authentic Bones Bearings straight from the Bones distribution center. Beware of fakes!