GROW1 Barbed Plug Connector 1/4in (50pcs/Pack)
https://www.dlw.co/shop/259025-grow1-barbed-plug-connector-1-4in-50pcs-pack-16576
https://www.dlw.co/web/image/product.template/16576/image_1920?unique=6468b5a
Made for 3/16", inner diameter, 1/4", outer diameter hoses. Sold in packs of 50.
