ITEM NAME:M14xM18 Double-Ended Thread Chaser - Car Rethreader Tool for Spark Plugs Description: - Double-Ended Thread Chaser was made with high-grade steel and features a rubber neoprene ring to hold the thread chaser snugly in place. - Engineered to outlast other cylinder head rethreader tools, the Double-Ended Thread Chaser set was made to stand tough. - Remove all of that crud and prepare your car or truck for spark plugs with the Automotive Double-Ended Thread Chaser set for better engine performance. - Each Double-Ended Thread Chaser set includes 14mm and 18mm sides for spark plug threads. Specification: - Material: Metal - Size: Approx 75mm*25mm Package Included: 1 Piece Double Ended Thread Spark Plug Tool Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making.Engineered to outlast other cylinder head rethreader tools, the Double-Ended Thread Chaser set was made to stand tough. - Double-Ended Thread Chaser was made with high-grade steel and features a rubber neoprene ring to hold the thread chaser snugly in place.