1-1/4 Inch (12-Pack) Cable Glands-Penglin 1-1/4" Npt Nylon Cable Connector, ?STRAIN RELIEF? Cable glands provide strain relief and typically seal out dust, dirt and even liquids. Seal clamp system allows the cord connector to tighten in a circular sequence on the sealing ring to give outstanding strain relief without twisting or damaging the cable. ?IP68 WATERPROOF?It is an ideal choice for harsh industrial or outdoor environments, Especially suitable for all types of electrical power, control, instrumentation, data, telecommunications automotive equipment and machinery cables. ?EASY INSTALLATION?Simply push the cable through the liquid tight Nylon strain relief tighten locknut for quick installation. Cable Range: O20-30 mm/0.79-1.18inch. ?DURABLE QUALITY? Shell is made of UL approved NYLON PA66, the NPT glands is flame retardant, anti-UV and anti-aging. ?SECURE AND RELIABLE?Internal Ratchet with Self-Locking feature protects against vibrations.