Pacific Flyers Premium Ceramic Si3n4 Silicon Nitride Skateboard

• Pack of 8 premium ceramic skateboard wheel bearings
• Superior precision G5 silicon nitride Si3N4 balls used in construction
• Double, non-contact, removable rubber shields for easy cleaning and less friction
• Pre-lubed with the highest quality synthetic lubricant for the smoothest ride
• Far better performance than any ABEC rated bearings; lifetime warranty against manufacturing defects

A pack of 8 SiN4 skateboard ball bearings at a bargain price! The balls in each bearing are made of precision grade 5 silicon nitride to offer superior performance. The shields are made of rubber, and the housing is of chromium steel. They have all been pre-lubed with the best quality synthetic lubricant to provide smooth operations always. These skateboard wheel bearings come with a lifetime warranty against manufacturing defects.