41 piece, metric tap & hex die set, dies are ideal for routine maintenance, repair work & for rethreading where high accuracy & tolerance thread is not critical, taps have straight flutes which are ground to provide rapid chip removal for efficient threading, designed for hand threading work in a variety of materials taps produce a class 2b thread, includes metric 3 mm x 0.50, 4 mm x 0.70, 4 mm x 0.75, 5 mm x 0.80, 5 mm x 0.90, 6 mm x 1.00, 7 mm x 1.00, 8 mm x 1.00, 8 mm x 1.25, 9 mm x 1.00, 9 mm x 1.25, 10 mm x 1.25 mm, 10 mm x 1.50, 11 mm x 1.50, 12 mm x 1.50, 12 mm x 1.7m tap & die, pipe 1/8" x 28bspp tap & die, plain die stock 5/8" hex dies, adjustable die stock for 1" dies, adjustable handle tap wrench for #0 - 1/2", t-handle wrench for taps #0 - 1/4", 2 in 1 tap wrench for taps 1/4" - 1/2", 18 leaf metric thread pitch gauge.