Hollis - Low Profile Brass SPG BAR or PSI:BAR When the service knob is

When the service knob is in the vertical position the loop is closed and the diver is on open circuit

Pneumatically balanced design

The Mono wing will fit onto the IQ backpack

Additional light considerations

Hollis - Low Profile Brass SPG BAR or PSI:BAR When the service knob isThe new Low Profile Brass SPG with scratch resistant lens, high contrast background, luminescent needle, low weight and small size allow for a more streamlined rigging and are ideal for stage and deco bottles. High contrast black background and white markings Luminescent needle Standard with Air Spool and Viton O rings Oxygen clean Available in 0 5000 PSI or 0 400 BAR Super hard PVD coated brass housing with Bourdon tube Scratch resistant plastic lens