The Brevis is 5" overall length. The blade measures 2.1" from tip to the finger notch. Generally, the thickness is .125". Steel is either S30V or S35VN. It can be made with any steel at customers request. Usually at no extra cost. The Kydex sheath is setup with a neck chain or cord and the hole spacing is set at 1" to permit attachment to many belt clips on the market.