Good for a bicycle workshop. Press block taper design, press in only outer ring contact bearing outer cover, effectively protect bearing damage. For bearings of , Bottom Bracket, AM frame pivot point bearing installation, etc . The utility model adopts the T thread screw rod specially used by the numerical control machine tool, thereby effectively improving the pulling force and reducing the abrasion. Applicable scope: flower-drum,column foot,middle axle etc. For bearing Specifications:6000/6001/6900/6901/6902/6903/608/R6/1526/ 1728/6800/6801/6802/6803/6804/6805/6806 and BB70/BB86/BB90/BB92/BB30... Bottom Bracket bearings Different batches may have different packaging box colors. Colour:Blue Material:Aluminum alloy Package Contents: 1set x Bicycle Bearings Extractor Installation Tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.