DHK21 is a double-ended insertion/extraction tool for the following contacts by Souriau (Burndy):HYPIN YHMM16-1, YHMM16-3, YHMM16-4, YHMM16-5, YHMM18-2, YHMM20-1, YHMM20-2, YHMM22-1, YHMM22-2 and YHMM24-1 contacts that are installed in YHLZ, SYHLZ & SYH modular terminal blocks
