330pcs m2 m3 m4 m5 brass isolation column knurl insert nut kit

the nut is made of high-quality brass with good oxidation resistance, corrosion resistance and long service life. the product is exquisite in workmanship and clear in threads. all the brass insert nut and nuts are placed in a box for easy carrying. 15 different types of insert nut meet your different needs. products are widely used in various types of electrical equipment production or maintenance fields..syi