100% New Never Used Features: Item:MR117ZZ Ball Bearings Widespread bearing,economic and standard. Easy Installation & Replacement Less Friction, Higher Speeds Reliable & Insulation Specification: Model:MR117ZZ,L-1170ZZ,677ZZ Material: Bearing Steel Inner diameter: 7mm Outer diameter: 11mm Thickness: 3mm Package included:10pcs Ball Bearings