FEATURES: Application - Offset Valve Tappet Gauge Set is designed for use when setting valve tappets and makes valve lash adjustment easy. 11 Blade Sizes - (.004"/.102mm), (.005"/.127mm), (.006"/.152mm), (.007"/.178mm), (.008"/.203mm), (.009"/.229mm), (.010"/.254mm), (.011"/.279mm), (.012"/.305mm), (.013"/.330mm), (.014"/.356mm). High Quality - The handle is made of high quality steel and rubber, rubber allows you to work with less injuries, the blade is also made of steel, steel ensures that the tool is durable and set accurately when adjusting valve lash. .