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Rock Breaker Parts Inner Outer Lower Upper Bushing. High Wear Resistance: Forged alloy steel with HRC 45-52 hardness for long working time. Wide Compatibility: Fits excavators 3-50 tons and models like HB20G, HB30G, HB40G. Customization Support: Accepts OEM/ODM orders, custom designs, and specific packaging. Quality Certification: ISO 9001:2000 certified with 100% finished product inspection. Fast Delivery: Standard delivery within 2-5 working days after order confirmation. Professional Manufacturer: Established in 2010 with 12,000 sqm factory and 100+ employees. Global Export Experience: Exported to Southeast Asia, Middle East, Africa, and Americas. 1 Month Warranty: Provides warranty coverage for after-sales service assurance.