Internal Piston O-ring scuba tool set for SGT2 (3pcs)

Instructions:

• Place the 1st stage body on the plastic base
• Squeeze the new O-ring and load it in the plastic  injection tool
• Insert  the loaded injection tool in the piston oring chamber and inject the oring in the chamber
• Use the metal rod of the injection tool, to gently push the new O-ring into place.