Description John Guest 12mm Collet Cover for Pond Pipework Collet cover prevents the accidental removal or tampering with piping. The pipe can be inserted with the collet cover already attached to the fitting or the cover can slide into position afterwards. Ideal for when installing 12mm tubing and fittings underground/non-servable places, adding piece of mind that the joint is permanent All John Guest fittings are manufactured and assembled in the UK.
