1、Sturdy and Practical: This sparking plug tool set is made of ABS material, superb craftsmanship, sturdy and practical, and can be suitable for a long term under the correct operation. 2、Accurate Gap: This sparking plug gap tool provides you with the perfect gap every time. Just place your sparking plug on the gap tool, which makes accurate gap very easy. 3、Universal Design: Our sparking plug tool is universal and can do the use with 10mm, 12mm, 14mm, 16mm sparking plug. 4、Compact Design: The professional compact design of the tool set make it easy to use. This tool set is easy to carry and use, also very convenient to store when you are not in use. 5、Application Example: Some sparking plug electrodes will bounce back, this is normal for some sparking plugs. If your gapping target is 0.44mm, we recommend using 0.42mm, when it bounces you will get 0.44mm. Item Type: Sparking Plug Gap Adjustment Tool Material: Aluminum alloy 1 x Sparking Plug Caliper 1 x Feeler Gauge