3M(TM) Cold Shrink End Cap EC-3, 10 per case Environmentally seals and mechanically protects exposed cable ends using no tools, mastics or tapes. Cable range 1.02" - 1.94" (26,0 mm - 49,2 mm) The 3M(TM) Cold Shrink End Caps EC-Series protects cables, pipes and other cylindrical objects from exposure to moisture, contamination, corrosion, ozone, ultra-violet radiation, physical contact and other environmental hazards.