Reasons to Be Pretty Happy: A Play

Gateway to The Heavens: How geometric shapes, patterns and symbols form our reality (Gateway Series)

Iceland (Insight Guides)

Hertel Spiral Point Tap, 3/8-16 UNC, HSS with TiN Coating, 3 Flutes, Plug Chamfer, 3B Class Fit, Right Hand Thread, 2-15/16" OAL

Greenfield Threading 330315 GT/VTD 5/16-18 SPS H3 3F HP Plug Spiral Point Tap, Black

Hertel Spiral Point Tap, 5/16-18 UNC, 3 Flutes, Plug Chamfer, HSS, Bright Finish, Right Hand Thread, 2-23/32" OAL

Greenfield Industries - C86127 - Spiral Point Tap, Thread Size 5/8-18, UNF, Overall Length 4 5/16 in, HSS-E, TiAlN, Right Hand

Greenfield Threading 330183 H2-Limit 2-Straight Flute Plug Low Shear Spiral Point Tap, 1/4" - 20 UNC, HSS, Uncoated (Bright) Coating, Right Cut

Greenfield Threading 330316 GT/VTD 5/16-24 SPS H3 3F HP Plug Spiral Point Tap, Black