4500psi DIN Hose Kit.

Suitable for both 200 bar and 300 bar DIN cylinders.
Liquid filled gauge.
Stainless Steel DIN Fittings with screw type bleed.
Never bother about damage or rust as these will outlast any other fill setup due to the rigid built. Hose is rated to handle 6000psi and comes with a 22"Micro bore hose. Micro bore hoses are best when you don't want to waste excess air on those fills.