Allstar Performance's spark plug gapper uses steel feeler gauge blades to check and set spark plug gap from 0.010 to 0.035 inches. The chrome-finished tool is sized for plugs with a 14mm thread.Sold individually.Compatibility: Fits 14mm thread spark plugs; gauges gaps from 0.010 to 0.035 in.FAQWhat gap range does this tool measure?0.010 to 0.035 inches, using steel feeler gauge blades.What plug thread size is this gapper sized for?14mm thread spark plugs.What material and finish does it have?Steel construction with a chrome finish.How is this different from the ALL96515 gap tool?The ALL96515 is an aluminum, gold anodized gap tool without a listed gap range, while this ALL96516 gapper uses steel feeler gauge blades for a specific 0.010 to 0.035 in range on 14mm plugs.{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What gap range does this tool measure?","acceptedAnswer":{"@type":"Answer","text":"0.010 to 0.035 inches, using steel feeler gauge blades."}},{"@type":"Question","name":"What plug thread size is this gapper sized for?","acceptedAnswer":{"@type":"Answer","text":"14mm thread spark plugs."}},{"@type":"Question","name":"What material and finish does it have?","acceptedAnswer":{"@type":"Answer","text":"Steel construction with a chrome finish."}},{"@type":"Question","name":"How is this different from the ALL96515 gap tool?","acceptedAnswer":{"@type":"Answer","text":"The ALL96515 is an aluminum, gold anodized gap tool without a listed gap range, while this ALL96516 gapper uses steel feeler gauge blades for a specific 0.010 to 0.035 in range on 14mm plugs."}}]}