10 Color Digital Series Gauges
Boost/Vacuum Gauge - GS-TCD01
Vacuum Gauge - GS-TCD03
Elite Series:
Boost/Vacuum Gauge - GS-ET01, GS-EWT01
Vacuum Gauge - GS-ET03, GS-EWT03
3in1 Series:
3in1 Combo Gauge with Boost/Vacuum - GS-3G-21, GS-3G-21-BAR, GS-3G-22
Blue & Red Digital Series:
Boost/Vacuum Gauge - GS-BD01, GS-RD01
Vacuum Gauge - GS-BD03, GS-RD03