Scubapro DIN 200 / 300 Bar Conversion Kit Universal 300 Bar DIN Kit for Scubapro regulators to also fit 200 Bar Cylinder valves. Fits all Scubapro Regulators. The smaller O-Ring supplied for all other Scubapro First Stages. The larger O-Ring supplied is for the MK2 Only Note that should the small O Ring be used on the MK2 you will seal off gas supply to the HP Gauge. Best fitted by competent persons. Technical Features: Type Kit: DIN Conversion Service Pressure: 300 bars (4350 psi) Easy to install: Great for Traveling Divers Compatibility: Universal - Fits ALL Scubapro Regulators: MK10, MK14, MK15, MK16, MK17, MK18, MK20,  MK21, MK25,... Material: Chrome Plated Brass, Plastic Purpose: Conversion of Yoke to DIN First Stage Regulators