10 inch long, round nosed (to prevent them getting snagged when you put them in your pocket) made from best Sheffield steel then coated in PTFE to prevent sticking to prepreg and attack from kevlar fibres. I've had a pair of these since I was an apprentice and they just do not let you down. As used by the best boat builders, car makers, carbon engineers - you name it, these are the best on the market.