Feature:The thread repair tool kit is a tool for spark plug repair.Made of durable material, and have a long service time.Simple and convenient to use.Specification: Material: MetalColor: Black, Silver ToneRe Thread Tap Length: 71mm / 2.80″Thread Length: 9.5mm / 0.37″, 11mm / 0.43″, 12.7mm / 0.5″, 20mm / 0.79″Fitment:Fit for 14mm Spark Plugs.Package Includes:1 x Re Thread Tap4 x Spark Plug Inserts.