SPECIFICATION
s and are used for marking centre lines , hole locations and pilot drill starting points . Set of 12 contains : ;10, 12, and 1 6mm (3/8 , 1/2 and 5/8 in ) cold chisels .1.5, 3, 4, 5, 6 and 8mm (1/16, 1/8, 5/32, 3/16, 1/4 and 5/16) pin punches .2, 6 and 8mm (3/32, 1/4 and 5/16 in ) centre punches .