Description: Features: brand new and high quality 30pcs thread repair kit including 25 wire thread inserts. 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. Made of high quality material, sturdy and durable in use. How to use: 1. Drill out damaged thread using correctly sized drill bit(supplied) 2. Tap re-drilled hole using tap supplied 3. Load coiled insert into applicator 4. Screw coil into casting 5. Using lug breaking tool,break off tag on insert 6. Thread is repaired and ready to use. Specification: Material: High-speed Steel Dimensions: As pictures shown.(approx) Thread specification: M8 Color: As pictures shown. Quantity: 1 set Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 25 pcs x Thread Inserts 1 x Lug Breaking Tool 1 x Installation Tool 1 x Wrench 1 x Thread Tap 1 x Drill Bit