Lapp Kabel 52003900.
3mm; Cable Gland Material:Brass; Colour:Silver; Gland Colour:Silver; Material:Brass; Mounting Hole Dia:37mm; SVHC:No SVHC (15-Jan-2019); Thread Size:PG29 - Male, PG21 - Female.ADAPTOR, REDUCER, PG29 / PG21; Conduit Component Type:Reducer; Converts From:PG 29; Converts To:PG 21; Conduit Material:Brass; For Use With:Lapp Kabel SKINDICHT Cable Glands; Product Range:-; Accessory Type:Adaptor; Body Plating:Nickel; Cable Diameter:28.3mm; Cable Diameter Max:28.