Black Panther CERAMIC Speed Bearings. 

Quickie's Black Panther CERAMICS are the "worlds smoothest skateboard bearings".  They have ceramic ball bearings, 4x polished races, teflon rust inhibitors, delrin core, and rubber coated removable shields.  Includes 8 Black Panther bearings, 8 speed washers and 4 bearing spacers.  This is a brand new set of top quality ceramic skateboard bearings.  

These are REAL skateboard bearings ... fast ... smooth ... and make for skateboarding!!!