29-Hole measurements: the sizes of 29-hole drill bit template gauge remain constant to provide precision accuracy, which are expressed in inches and decimal equivalents, ranging from 1/16 inch to 1/2 inch with white marked fractions and decimals, providing a clear and accurate measurement Sophisticated design: adopting machined heavy-duty steel construction and fine ground to close tolerances, the drill size gauge allows to quickly and easily distinguish from drill diameter; The hanging holes on the top and bottom are convenient to hang and save your space Useful and practical equipment: made of stainless steel for sturdiness and reliability, the drill bit sizer helps measure the sizes effectively when using timeworn, unmarked and small bits to fit electric drills or manual drills, which is useful equipment in your household toolbox A practical helper for measuring: you receive 2 piece of black drill thread gauge, which has been clearly printed with a white scale to provide high contrast and not wear out, offering an efficient way to measure drill bits Compact and portable: the drill bits 1/16 to drill bits 1/2 inch gauge is about 6.2 x 2.36 inches, compact and to put in your bad for carrying out, which can be applied as a simple ruler to draw straight lines and squares as well Material:Stainless steel colour:Black Package Contents: 2 x Drill Bit Gauge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.