No power supply is needed to operate the clip gun, it can be used in any work situation, from new homes to retrofits, at any stage of construction (very economical cost!). The RB-5 Manual Clip Gun drives the two galvanized nails of the clip 5/8" into the wood, providing damage- free installations and long- lasting holding power. Peter Mangone RB-5 Manual Clip Gun is designed for installation of PEX tubing in plumbing and radiant heating applications. PEX Clip Gun is particularly useful for staple-up projects, when installing between the joists and securing it to the wooden/plywood subfloor. This clip gun comes with a detachable belt clip and it can hold up to 20 clips at a single time use.