Push-to-pull, push-to-connect, push-fit or instant fittings make it possible to connect tubing, without the use of tools (tools are required to cut tubing to length).
These fittings work in the same way as regular tube fittings but use an O-ring for sealing and a retaining ring to hold the tube in place.
They can be used with many kinds of tubing in several sizes for many purposes.
The main advantage of this technology compared to traditional tube fittings is that fittings and tubes can be easily removed and recycled. In addition, the joints can often be rotated after connection (swivel).