Jackmoon Anodized Aluminum Conduit Coupler, Size 1.5", for conduits with a outside diameter between 1.8" and 2", reverse threaded, black l Anodized coating is color-coded for easy size identification l Ribbed external surface provides excellent non-slip gripping during installation l Low profile design allows the couplers to pass easily through plowchutes l Designed for all types of polyethylene ducts.