M3 x 0.5 D3 2 Flute Mod. Bottom SuperTuf Al Spiral Flute Tap w Chrome, Regal Cutting Tools, Mfr#: 076860MS$23.35+
M6 x 1 D5 3 Flute Plug SuperTuf Ni Spiral Point Tap with TiAlN, Regal Cutting Tools, Mfr#: 075733MS$32.39+
3/4-10 Spiral Pt Plug Tap High Vanadium High Speed Steel, Kodiak Cutting Tools, Mfr#: 5573662$115.99+
9/16"-18 NF H5 3 Fl Semi-Btm. Spiral Flute Accu-Shear Tap, Regal Cutting Tools, Mfr#: 033031TC$54.55+