500Pcs M2*L-3.5 M2.5*L-3.5 M3*L-4.2(OD) Injection Nut Copper Insert Knurled Nuts Knurling Kit For Electrical
https://www.vogueparade.com/shopping/EN/42/1/4001267255900/500pcs-m2l-35-m25l-35-m3l-42od-injection-nut-copper-insert-knurled-nuts-knurling-kit-for-electrical//