180pcs m4 copper hex standoff isolation column with m4 cross screw and nut set

the isolation column is made of high-quality copper with good oxidation resistance, corrosion resistance and long service life. it is equipped with nuts and screws for your convenience use. the product is exquisite in workmanship and clear in threads. all the copper standoff and nuts are placed in a box for easy carrying. 8 different types of standoff meet your different needs..syi