White plastic ring which sits on top of a regulation hole cup to highlight the hole. Also helps maintain shape of hole and prevents debris falling into the cup from the side wall. Have proved very popular with many course managers particularly on practice putting areas and on the main course under local winter rules.
Please Note: Stabilising rings do not comply with the
Rules of Golf and having discussed this with the R&A, the use of these rings
would not merit an exception. Any scores returned for handicap purposes when
the stabilising rings are in place would NOT be acceptable for handicap purposes.