Compare Quick view GWS Tool Group SKU: SMT59013 GWS 9/16-18 NF H3 4 Flute HSS Plug Tap .429" Shank 16220 (LOC1298B) Overall Length: 6" Shank Diameter: .429" Material: HSS Flutes: 4 MPN: 16220 EDP: 16220 MSRP: Was: Price Now $74.95 1 In Stock Quantity Add to Your List