<br><b>Quantity per Package:</b> 100 Pcs <br> <br><b>Grade:</b> 25 <br><b>Material:</b> Chrome Steel (AISI 52100) <br><b>Diameter:</b> 7/16" Inches (11.1125 millimeters) <br><b>Weight:</b> 0.1989 ounces (5.64 grams) <br><br> PGN’s G25 7/16" Chrome Steel Balls extremely precise and smooth surface guarantees you won't find any defects, such as flats, pits, soft spots, and cuts.