This is a set of two full ceramic bearings. Sizes: 3x10x4mm - 1030 5x11x4mm - 1150 Compatible with: 24 25 Ocea Conquest CT 25 Grappler CT 25 Barchietta 24 Calcutta Conquest Shallow Edition 19 Antares 23 Calcutta Conquest MD 21 22 Calcutta Conquest 23 Metanium 22 Bantam 21 Scorpion MD 22 23 Ocea Conquest IMZ Limit Breaker Zillion, Steez (some models) ABU Revo, etc. Please confirm the bearings used as I may not be aware of all models. Please refrain from price negotiations. A discount of 200 yen will be applied from the second set purchased. Please comment if you wish to purchase multiple sets. Returning customers, please also comment.