1. Professional manuafacuturer 2. Iron Oilless Bearing for electric hammer 3. Precision sizing 4. Even porosity Product NameIron Base Oilless ... Electric HammerRaw MaterialsMPIF F-0005-K20, ASTM B439ApplicationAutomobile, Motorcycle, Power tool, General mechanism, Home appliances, Office equipment,Textile machinary, etc. ... at your convenient time! Oilless Self-lubricating Bearing for Electric Hammer