1)Material: 45# carbon steel 2)Socket Size: 17x19x21x23mm 3)Surface Finish: chrome plated, zinc plated, nickel plated ect. 1)Material: 45# carbon steel2)Size: different sizes availialbe3)Surface Finish: chrome plated, zinc plated, nickel plated, fully polished, sliver powder, black etc.4) Brand: Brisunny or OEM5) We have the ability of providing products according to your design.6) Quality and ...