Product material:Precision steel balls are made of 304 stainless steel, with high precision,smooth surface, rust prevention, corrosion resistance, wear resistance and exquisite appearance.
Widely used in:steel balls are Widely used in bicycles,casters,door locks,drawer slides and auto parts,etc.
Product packaging:1/4" 100PCS + 7/32" 100PCS + 3/16" 100PCS + 5/32" 100PCS + 1/8" 100PCS + 3/32" 120PCS;6 sizes, a total of 620PCS, packed in a box.