The flat side on this unique awl helps decress slippage in your hand and stop it from rolling off your workbeanch. The solid brass chuch screws down tightly to securely lock the blade. The handle is 2-3/4" long. BLADE NOT INCLUDED. There are 7 blades avaiable for this haft. Search for awl blades and the ones with #3319 -01 through -07 fit this haft.