Installs Cleco-Lok® C, CC, CL & CHD fastenersInstalls Monogram® M, MM, ML, MEL & MHD fastenersInstalls Kwik-Lok® K, KK, KT, KL, KEL & KHD fastenersMade from forged steel and nickel plated to resist wear and abuse.Pliers are compatible with all spring-loaded types of sheet metal clamps.