01). Function: for use in workshop 02). HSS, set of 7, circular split pattern 03). To contain taper, 2nd & bottoming taps, dies, diestocks & tap wrenches 04). Supplied in fitted case 05). BSW sizes: 1/4, 5/16, 3/8, 7/16, 1/2, 5/8, 3/4 inch BSW