1. Material: 45#carbon steel, 40CRV
2. Surface treatment: Chrome plated mirror polish/matte finish/satin finish/Ni-Fe alloy plated.
3. Size: Metric(6mm-22mm), imperial(1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8")
4. Package: Blist card packing.
5. Payment: L/C, T/T.
6. Delivery: In 30-45 days or according to your order quantity