The Anti-Block Rings come in two sizes, for use with M16 and 1”1/4 fitting core bits, and are made in copper. Positioned between the fitting and the core bit or between the coring machine chuck and the fitting, like normal metal washers they make it easier to remove the elements (fitting and core bit) when the job is finished.
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The Anti-Block Rings come in two sizes, for use with M16 and 1”1/4 fitting core bits, and are made in copper. Positioned between the fitting and the core bit or between the coring machine chuck and the fitting, like normal metal washers they make it easier to remove the elements (fitting and core bit) when the job is finished.