Feeler gauge set Made of #65 manganese steel, each measuring feeler gauge has 32 blades of thickness. Foldable feeler gauges are easy and convenient to take and store. Precision Gap Measuring Tool for Valve Adjustment, Spark Plug Gap, Machining,piston ring gaps, bearing gaps, basses, guitars and other hard-to-reach places
Easy identification: dual standard metric and imperial stainless steel tool set measuring from 0.0015 inch to 0.035 inch (0.04 mm to 0.88 mm) The numbers of size are etched into the feeler gauge for easy identification
WARM TIPS:Stainless steel plug ruler has some anti-rust oil on it to prevent it from rusting, after a long time of grinding and polishing to ensure accurate use, please don't worry about it!