Fixinus 30 Piece M5 x 0.8mm Thread Repair Insert Kit, Stainless Steel Thread Repair Kit Helicoil Coil Compatible Hand Tool Set for Car Repair ✔ Features 1.This very useful thread repair kit is for M5 for repairing or replacing damaged or stripped internal thread. 2.Made of high speed steel and red plastic handle, robust and durable in use. 3. Suitable for steel, cast iron and aluminum. 4.Ideal for repairing damaged threads, suitable for engine repair and other automobiles. ✔ Specification -Thread size: M5 x 0.8 mm -Material thread inserts: stainless steel -Tapping material: HSS -Drill material: HSS -Wrench material: electrophoresis surface ✔ How to use 1, drill out damaged thread with drill of correct size (supplied); 2, tap the drilled hole with the supplied tap; 3,Load wrapping insert into applicator; 4, screw coil into cast part;