Accepts Cole Hersee relays and standard ISO relays. Modular design featuring sockets that dovetail together and Accepts standard quick-connect terminals. Sockets are constructed of rugged glass-filled polyamide with a temperature range -40C to 85C. Product Features:Accepts RA- 70A relaysUse with Tyco (AMP) terminals 280756 or 280755Accepts RA- and RC 20 to 40A relaysUse with Tyco (AMP) terminals 42281 or Ark-Les 3000H112A