Features: This repair kit includes insert installations, wire thread inserts, twist drill-bits, thread taps, lug-breaking tools. With package-case, convenient to store and carry, you can easy and fast-to collect and take out. Made of premium-quality material, reliable and durable-for a long-time use. Perfect for restoring damaged-threads, suitable for engine repair and other-automotive. Applications for steel, cast iron and aluminum. Can be used in daily-repair, car repair, drilling machine, etc. Specifications: Material:Stainless Steel Size: As Picture Shown Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1 Set Thread Repair Kit