6000A, 24" (61cm) Thin Flexible Probe, 4 Pack The i430-Flexi-TF-II is a flexible AC current probe for use with the Fluke 430 series Power Quality Analyzers including Series II. The i430-Flexi-TF-II is optimized for current measurement on thick and hard to reach conductors. Fluke 430 series I products have one current range and will measure 3000A using these new flexis which will provide the same performance as the original probes. The Fluke 430-II products have two current ranges and will measure to 6000A.