Brand Name: irwin | Material: steel | Number in Package: 1-pc. | Packaging Type: carded | Shank Type: round-shank | Sub Brand: hanson | Usage: checking-fractional-bit-diameter Irwin fractional drill gauge - made of steel this | Steel drill gauge for checking fractional bit diameters | Steel drill gauge for checking fractional bit diameters | Irwin fractional drill gauge - made of steel this drill gauge is used for checking fractional bit diameter.