Conduit Fitting with Strain Relief, Straight with External Male Thread, Conduit Size 20mm, M25 Thread, Minimum Bore 17mm, Suitable for Unbraided Nylon Conduit, Clamping Range 11.5 to 15.5 K, Approved for Zone 1 and 2, Zone 21 and 22, IP68 Rating, Modified Nylon 12 with Nickel Plated Threads, Black