10Pcs Strain Relief Fixing Gland Connector PG25 for 16-21mm Dia Cable Product Name : Cable Gland;Model : PG25 Cable Range : 16-21mm / 0.63" x 0.8";Thread O.D. : 30 mm Total Size : 45 x 37mm / 1.8" x 1.5" (L*D);Main Material : Nylon, Rubber Color : Black;Weight : 210g Package Content : 10 x Cable Gland