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Spiral Fluted bottom cutting threading tap

Type ...................... 3 Flute hs hss high speed steel

Condition ............ New with mfg packaging 

Overall length is 1.937"

I think this is also called an Exo tap, if so I found this info about it 

The EXOTap A-Tap is an all-purpose Tap series designed to simplify tool management and to excel in a wide variety of materials and applications. The EXOTap A-Tap is made from powdered metal HSS and has OSG's patented V coating to achieve excellent wear resistance. The spiral flute series has adopted a variable helix flute design, which encourages stable chip evacuation and reduces cutting forces. The spiral point series has unique geometry that enables greater chip control that can help produce tightly compacted chips for easy ejection from the hole.