Mooring Ring, 3" heavy-duty ring, Marine grade hot dipped galvanized finish for long life. 3 inch ring for securing boats and PWC. Fasteners sold separately. 3/8" carriage bolt or lag screw is required for mouniting. The hole pattern matches other PlayStar Commercial Grade Dock brackets. It is possible to mount utilizing the same hardware as our other brackets. PlayStar stands behind the quality of all its products.