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Adaptaflex® PK - Very High Specification Conduit - NC Size 28mm - NW Conduit Size 23 - Coarse Conduit Pitch - Out Dia 28.4mm - In Dia 21.7mm - Min. Bend Radius 65mm - Reel Length 25m - Material Polyetherketone - Super Low Fire Hazard - Color Black - IP66, IP67