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The AUTOOL SPT101 Automotive Spark Plug Tester features a dual-hole design that allows for simultaneous testing of two spark plugs. The AUTOOL SPT101 Automotive Spark Plug Tester features an adjustable working frequency ranging from 0 to 6000 RPM.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.