Metalsub Deluxe O-Ring Kit is the most complete maintenance kit on the market for the care and servicing of scuba diving equipment. It includes a wide selection of O-rings in multiple sizes and materials —black NBR and green Viton— to cover the needs of regulators, BCDs, tanks, dive computers and diving accessories. The kit is completed with replacement screws and pins, purge valves, Metalsub silicone grease, a professional BCD Tool for O-ring extraction and installation, and a practical Metalsub storage box with organized compartments. Everything needed to perform a complete maintenance of scuba diving equipment in a single pack, with top-quality materials in a compact format ideal for taking to the boat or dive center.