Black Nylon Plastic Spacer, Block OD 185mm x ID 47mm x 20mm Length
185mm OD, 47mm ID. Black coloured Nylon grade 66 Plastic Spacers - new from manufacturer. Nylon Spacer. Nylon 66 is a Polyamide and one of the hardest and strongest engineering grades of Plastic, aswell as being a great source of insulation.