Advanced Air Systems, INC. is excited to announce the release of the all-new SIG-550 Shock Inflator. With the recent popularity of Nitrogen shocks there has been a growing need for a durable and accurate tool to fill and maintain them. Powertank has finally answered this need with the new SIG-550 Shock Inflator, designed specifically for inflating and tuning Nitrogen-filled shocks. Featuring a Large, easy-to-read glycerin-filled gauge and a special "No-Air-Loss" Chuck, the SIG-550 ensures consistent, accurate fills every time. A heavy-duty 36-inch high-pressure Stainless Steel braided line, provides safety and convenience. The SIG-550 is perfectly suited for use with Powertank's new XP300 Nitrogen-compatible regulator, for a complete Nitrogen and CO2-capable setup.