Extra Long Pin Punches - Heavy Duty [No. 256P] A set of 5 extra long Pin Punches containing one each of 1/8 (3 mm) 3/16 (5 mm) 1/4 (6 mm) 5/16 (8 mm) & 3/8 (10 mm) packed in a vinyl pouch. • The extra Long Pin Punches are useful for all applications where added leverage is required. • Manufactured from high quality carbon steel accurately hardened and tempered so that the Pin will withstand continuous use and the striking end will not splinter. • These are induction hardened to ensure consistent hardness and a special tempering process prevents the head from fracturing.