SHC207-21 NA207-21 Stainless Steel Insert Bearing 1-5/16" Bore AISI440 for Bearing and AISI304 for Collar, Shields Screws stainless steel material, Low noise vibration level, with Spherical OD and Eccentric Locking Collar Filled with Grease FM-222,applications which require better safer material bearing to replace regular ones for 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