Product Description D-Line Conduit 2m length. 20mm outer diameter - 1.7mm wall thickness.Robust, high quality solution Made in the UK. Use D-Line conduit to route & protect electrical cables. User can simply cut length to required size. Route & protect electrical cables. High quality solution, made in the UK. 20mm outer diameter, 2 metre length - can be cut to size if required. 1.7mm wall thickness.