Solid Stainless Steel Bearing Balls Outer Dia 3mm-60mm Through-Hole 1.1mm-6mm. Name: Solid Stainless Steel Ball Through-Hole No Thread. Material: Stainless Steel. Outer Diameter(OD) : 3mm60mm. Through Hole(ID) : 1.1mm6mm. Size = OD x ID. (ODxID)3×1.1mm (Outer Diameter=3mm; Hole Diameter=1.1mm). Surface Treatment : Original Glossy Polished. Hole Type: Full Drilled. Drilling Direction: Across Center. Tolerance: ±0.1mm. Packaging: Plastic Bag / Carton. Good rust and corrosion resistance, High hardness, Solid, threadless, polished, smooth surface. It can be used for decoration, teaching experiments, mechanical accessories, hardware accessories, DIY beaded bracelets, etc. Please allow minor errors due to manual measurement. Thank you for your comprehension. Monitors are not calibrated, the element color shown in the photos may differ slightly from the real object. Please take the real one as standard. According to your choice! Choose your needs from the drop-down menu above.