Threaded entry:Metric Material:parts A.C.E.F are made of nylon66 characterised by high fire resistabt with its fkamablity rating UL 94V-2,parts b and d are made of EPDM neoprene. Color:black and grey. Working temperature: -40¡æ-100¡æ,the item can also endure 120¡æ instantly Protection:IP68 Standred:IEC698 Installation:directly screw into hole of same thread size or fix with the spare locknut,with cable through it inside hole,seal it