Material:nylon66,94V-2 agree,by UL,and tight ring from rubber,oil resisting... Feature:1.special designation.good strengthsile and none damage to electrical mechine. 2.not need to dismetgrate the fin terminal,cable can be inserted through direaty then tighten easy and save time.Aplication:used for machinery control box,distribution plate,machine and electrical etc. Nylon Cable Glands