Professional Quality crimping pliers with round magazine and five interchangeable dies for non-insulated open plug type connectors insulated terminals plug connectors butt connectors insulated and non-insulated end sleeves (ferrules) from 0.25 - 6 mm. Manufactured from oil-hardened chrome vanadium steel fitted with a round magazine that provides sorted and protected storage of interchangeable dies allowing crimping dies to be changed quickly and easily. Sold loose.