Spark plug tool made of premium aluminum alloy and features a red anodized with a matte texture, ensuring durability and ease of use for a ! Allows you to adjust the spark plug easily and quickly. Some spark plugs may rebound when adjusting the . To achieve the desired thickness, if your target is 0.44 mm, we recommend using a 0.42 mm feeler gauge. When it rebounds, it achieve the desired 0.44 mm . Spark plug gapping tool allows you to adjust the with less time and effort. Just place your spark plug perfectly on the tool, and you can it precisely very easily, a great tool. You receive 1 spark plug tool and 1 feeler gauge. The feeler gauge has 32 blades, all engraved with sizes, measuring from 0.0015 inches (0.04 mm) to 0.035 inches (0.88 mm). (Tip: There is some anti-rust oil on the feeler gauge to prevent rust, please to use it.) Sparkplug tool compatible with most 10mm, 12mm, 14mm, 16mm spark plugs. Suitable for almost all spark plugs, but not compatible with 18mm thread or long or short distance spark plugs. Colour:As Shown Material:Metal Package Contents: 1set * spark plug tool 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.