Size: 3-3/8"-8; Material: High Speed Steel; Finish: Uncoated (Bright); Style: Set; Cutting Direction: Right Hand HSS, Tap, Size: 3-3/8-8, 3-3/8-8" 8 Pitch Tap Set - Set includes taper, plug and bottoming taps. Decimal Equivalent: 3.375-8 HSS Tap Set