You Get: there are nut and bolt gauges, enough quantity can meet your using needs; It is an accurate tool to make you easily check the size of bolt and nut, and the permanent markings on it can accuracy Sturdy Material: the bolt measuring tool is made of quality plastic, which is sturdy and reliable, not easy to break or deform, with clear marking for easily reading, you can use it with confidence Easy to Store: the bolt gauge sizing tool features laser marks, which not easily fade or scratch, and it can be easily hung , fixed on the toolbox, or just put on the workbench Practical Tool: the bolt and nut sizer is a helpful tool for your to easily check the size of bolt and nut before buying the replacement, and each gauge can rotated on the cable at to achieve rapid thread verification, suitable as a nice addition for your toolbox Please note: Slight color difference or difference in kind, does not affect the use, please do not mind, thank you! Colour: blue Material: plastic Package Contents: 2 x Thread Gauge Checker 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.