Features: 1.100% Brand New Spark Plug Removal Spanner Tool. 2.Double socket design, with the use of the extension bar, more convenient. 3.Made of high quality chrome-vanadium steel with anti-rust treatment surface, more durable. 4.16mm/21mm double head hexagonal socket wrench, wide application. 5.Perfect for removal of deep hard to reach spark plugs. Specification: Features: 100% Brand New Spark Plug Removal Spanner Tool. Double socket design, with the use of the extension bar, more convenient. Made of high quality chrome-vanadium steel with anti-rust treatment surface, more durable. 16mm/21mm double head hexagonal socket wrench, wide application. Perfect for removal of deep hard to reach spark plugs. Specification: Condition: 100% Brand New Material: Chrome-vanadium steel Color: Silver Size: 16mm/0.6in, 21mm/0.8in Socket Wrench Total Length: 275mm/10.8in Extension Bar Length: 170mm/6.7in Package List: 1 * Spark Plug Socket Wrench PackageList: