Overview Reviews Product Description Installs a new solid steel spark plug thread insert in original thread location. Set includes one-piece drill tap, long tap holder, short tap holder, insert installer, swedger and handle. Includes four insert sizes: 5/16", 7/16", 11/16" and 1". Lisle Tools Catalog Product Videos Custom Field Harmonization code HTS #8205709000 Manufacturing country US Product Reviews Write a Review Write a Review × Lisle M14-1.25 Deep Hole Aluminum Head Spark Plug Hole Repair Kit 65200 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *