If you ever work with push connect fittings you may find that pushing the small collet into the fitting while pulling the tube can be a challenge sometimes. especially in tight places. Fitting release tool will let you disconnect the fittings while keeping your finger tips from getting sore. Tubing Release Tools for 1/4" or 3/8" connectors. All the quick connect fittings like john guest come with a collet covers to secure and prevent accidental removal or tampering with tubing. This tool can help you to easily remove the tubing from the secure collect by locking the collet.