Package includes: 3 different style of plug space gauge measuring tool can meet all your daily demands. Both of the wire plug space guage tools come with built-in space adjuster on both ends. So you can adjust the plug space after you're done with the measuring. The scale range of the coin-type plug space gauge tool is from 0.020in to 0.100in. The scale range of one of the wire-type plug space measuring tool includes: 0.025in, 0.030in, 0.034in, 0.035in, 0.040in, and 0.045in. The other wire-type one includes: 0.040in, 0.044in, 0.045in, 0.050in, 0.060in, 0.080in. All the plug gauge measuring tools are in both and metric units (front with and back with metric). The plug space gauge measuring tools are made of alloy material, which is sturdy and durable. Both and metric units are precisely for easy and reading. Colour: silver Material: metal Package Contents: 3 * Plug Space Gauge Measuring Tool Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.