ITEM: 3 mm Diameter, Grade 25, Chrome Steel Ball MSC INDUSTRIAL. MANUFACTURER: MSC INDUSTRIAL. BRAND: MSC Industrial. MANUFACTURER PART: 20144. 3 mm Diameter, Grade 25, Chrome Steel Ball 62 to 66 C Hardness, 0.00005 Inch Diameter Deviation, 0.000025 Inch Sphericity (MOQ1, Pkg Qty100)CATEGORIES: Maintenance, Repair and Operational (MRO) Supplies. Metals. Steel Balls. N/A. TOTAL RECYCLED CONTENT: 10.00%. POSTCONSUMER RECYCLED CONTENT: 1.00%. KEYWORDS: MSC IndustrialMetalsSteelSteel BallsN/A.