LAPP SILVYN® RILL PA6 SINUS Black Conduit - LAPP 61806565, This flexible Silvyn RILL conduit from LAPP is made from halogen-free black polyamide with a sinusoidal slit which remains closed under torsion. LAPP 61806565 SILVYN® RILL PA6 SINUS Black Conduit 12.2mm Int Diameter