Features: brand new and high quality Made of high-quality aluminum alloy materials, practical and durable. Universal for spark plug for gap tool, for most 10mm 12mm 14mm 16mm spark plugs, used your desired size feeler gauge for gap thickness. Place your for spark plug into the tool and choose proper feeler gauge thickness, then turn the knob until the side electrode compressed to proper thickness. Simply place your for spark plug onto the for gap tool perfectly, this made it so easy to for gap precisely, great tool. This for spark plug for gap tool will give you that perfect for gap every for time. Specifications: Material: Aluminum Alloy Length: approx 16.5cm/6.50 inches Color: Red/Black Package Includes: 1x for Spark Plug for Gap Tool note: Please allow 1-2cm errors due to manual measurement. Due to the difference betweeen different monitors,the pic may not reflect the actual color of the item.