Series E500 HSS Straight Flute Tap Set - Metric For hand or machine tapping in a wide variety of materials. • Metric • HSS • Bright finish • Straight flute for through or blind holes • Manufactured to ISO 529 • 1.5Xd • Sizes M1 to M24 • Set No.6 contains Taper, Second and Plug Taps Taper - 7-10 pitch chamfer length Second - 3-5 pitch chamfer length Plug - 1-2 pitch chamfer length