GROW1 Barbed Cross Connector 1/4in (10pcs/Pack)
https://www.dlw.co/shop/257725-grow1-barbed-cross-connector-1-4in-10pcs-pack-16581
https://www.dlw.co/web/image/product.template/16581/image_1920?unique=6468b5a
Made for 3/16", inner diameter, 1/4", outer diameter hoses. Sold in packs of 10.
