Guhring Thread Forming Tap, Straight Standard, Series: 827, Measurement System: Metric, M8x0.5 Thread, Fine Thread Standard, Plug Chamfer, 80 mm Overall Length, 3 Flutes, Right Hand Cutting Direction, Class of Fit: ISO2/6H, 6 mm Shank Diameter, 7.459 to 7.599 mm Tap Drill, 4.9 mm Square, HSS-E, Bright, D3/D4 Thread Limit