Check the listing for details. TTC 1-3/8"-16 HSS RH Special Thread Bottoming Tap. Condition: New. Listed at 133.32 USD. Chamfer Bottoming. Style Bottoming. Tool Material High Speed Steel. Hardness 58 to 60 RC. Shank Type Straight Shank. OC_NonFerrous X. Size 1-3/8".