5 Sets of 4 Bolt Star Xtenders; Use Bolt Star Xtenders on larger outer diameter concrete forming tubes. These can be used with the 18, 24, or 30 Bolt Star Templates. Larger concrete forming tubes are typically labeled standard or nested and are slipped over the outside of standard size tubes to save on shipping costs and storage space. Bolt Star Xtenders fit nominal standard wall tubes by most major manufacturers.

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