This pushlock tubing adapter is useful for adapting soft nylon or silicone hose to a push lock (john guest) fitting. Useful to connect your ATO pump's output tubing to the 1/4" pushlock input of our kalk stirrer. The 3/16" x 1/4" adapter fits the tubing that comes with our ATO Diaphragm Pump, for an easy kalk stirrer connection. Choose size below.