This quality fuel tester tool from ASA is a required addition to every pilot's flight bag (glider pilots excepted). This tester works with all types of fuel drain fittings, and there is also a reversible combination Phillips and slotted screwdriver head so you can quickly open inspection panels without needing to carry yet another tool. The side of the tester lists the standard colors for 80, 100LL, and 100 octane fuel. Durably built from hi-impact plastic, this tester will give you years of dependable service. We also have a "deluxe" model available (in a separate listing) which includes a removable splash guard.