Thin Williams Probe Thin Williams Probe POW Single-ended, color-coded probe. Ergonomic handle. Thin Williams. SKU Handle POW #30 Round POW6 #6 Satin Steel™ Where to Buy x Category Dealer PartnersSales RepresentativeStrategic MarketsSchools RepresentativeAccutron™ Equipment Sales Zip Code Find RepresentativeReset Select a category, input a zip code and click on Find Representative, or explore the complete list here.