Ø1-125mm 304 Stainless Steel. Bearing Balls G200 High Precision Metal Ball. Hardness: HRC (without risk). Fine grinding, polishing, smooth appearance, moisture resistant, rust, acid and alkali resistance, corrosion resistance. 304 Stainless steel is safe, non-toxic, lead-free, long-term non-rusty, environmental protection, high strength and good processability and weldability. According to your choice! Please choose that you need from the above menu. Please list your special requests color, packages, etc. (15-35 Days to Delivered). Please contact me before you return it. Not accept returning of electronic components. Feedback is very important to us.