Einhell manufactures the 4173760 connector set, which features a 40 mm plastic construction. This adapter, with a 33.3 mm (1") internal thread, is ideal for pump accessories. Typical applications include connecting hoses for water transfer or garden irrigation systems. https://elecena.pl/product/28524999/einhell-4173760-connector-set-40mm-plastic-adapter-for-1-threads 2025-04-22 https://elecena.pl/product/28524999/einhell-4173760-connector-set-40mm-plastic-adapter-for-1-threads 2025-07-22 https://elecena.pl/product/28524999/einhell-4173760-connector-set-40mm-plastic-adapter-for-1-threads 2026-05-07 https://elecena.pl/product/28524999/einhell-4173760-connector-set-40mm-plastic-adapter-for-1-threads 2026-07-13 https://elecena.pl/product/28524999/einhell-4173760-connector-set-40mm-plastic-adapter-for-1-threads 2026-10-16