Flex2Code Pin adaptors are of compact design saves space inside electrical panels. All copper adaptor design allows flex conductors to be used with equipment rated for code conductors. For copper conductor only. Only requires one crimp to save installation time. Supplied with insulating cover. UL 486A/B Listed for 600 V, 90 °C. UL 467 Listed for direct bury 500 kcmil to 6 AWG. Color coded to identify proper compression die. Chamfered entry for easy conductor insertion. Electro-tin plated.