SSB203 AISI440C AISI304 Stainless 17MM Bore Insert Bearing w/Set Screw Locking stainless steel material, low noise vibration, Pre-filled with grease Mobil FM-222 Good for various applications which require better & safer material bearing to replace regular ones anti-corrosion and direct contact purpose For a precise fit and wise selection. Our trusted accessories keep your tools running smoothly. Please confirm your model above before ordering. Double-check dimensions and photos for the right fit. Quality assurance ：Well-designed, excellent processing. Made of highly durable materials, rigorously This is a manufacturer substitution. Functional equivalent to prior parts.Product Description Well-designed, excellent processing.tested, compact & sturdy, longevous. Ultra Durable, Quality Replacement.Made from durable high quality material and well-tested by the manufacturermade from durable high quality material and well-tested by the manufacturer