Irwin® Hanson®, 1840235, Tap Set, Self-Aligning, Measurement System: Metric/Imperial, 41 Piece, #4-40 to 1/2-20, M3x0.5 to M12x1.75,1/8 in NPT, 1/8 in BSP Size, BSP/NPT/UNC/UNF Thread Standard, Right Hand Cutting Direction, Class of Fit: 2B, Taper Chamfer, High Carbon Steel, Bright