MD = EU38 - 42

S1 Lifer Certified Skate/Bike Helmet

wide W concave mellows out near the trucks for comfort while providing strong lateral support for carving and sliding

Package contains 16 bearings

This combination of Skate Rated design

Bones Swiss Ceramic Bearings 608 (8-Pack) Enough for 4 Wheels - Sale Proto MD = EU38 - 42Bones 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!