All plastic 8mm threaded insert the thread is moulded in plastic to be more economical than the brass plated type

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All plastic 10mm threaded insert the thread is moulded in plastic or heavy duty brass plated type.

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Tube insert with plastic body and Plastic or brass nickel plated thread to fit box tubing from 30mm x 30mm to 50mm x 50mm.

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Tube insert with plastic body and brass nickel plated thread to fit box tubing from 30mm x 30mm to 50mm x 50mm.

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Tube insert with plastic body and brass nickel plated thread to fit box tubing from 40mm x 40mm to 50mm x 50mm.

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