3M(TM) Cold Shrink End Cap EC-1, 10 per case Environmentally seals and mechanically protects exposed cable ends using no tools, mastics or tapes. Cable range 0.46" - 0.82" (11,6 mm - 20,9 mm) The 3M(TM) Cold Shrink EC-Series End Caps protects cables, pipes and other cylindrical objects from exposure to moisture, contamination, corrosion, ozone, ultra-violet radiation, physical contact and other environmental hazards.