Designed by a noted London gunsmith, this 12 piece set can be used on virtually any high grade gun ever made.  Each screwdriver is 5 3/4" long and has a rosewood handle with an integral shaft.  These screwdrivers NEED to be hardened.  All are hollow ground on one side to facilitate custom grinding.  Numbered 1 through 12, blades are sized in width from .127" to .378".  The set is presented in a French fitted, beautifully finished walnut case.  16" long by 8" wide, 1 1/2" deep.