131Pc Metric Thread Repair Kit HSS Drill Helicoil Set Heli Coil Tap Insert with Case131Pc Metric Thread Repair Kit HSS Drill Helicoil Set Heli Coil Tap Insert with Case This thread repair kit is used to repair or replace damaged or stripped internal screw threads. The kit has altogether 131 pieces, all made according to professional standard. It has one HSS tap for each size, one HSS drill for each size, 2 insert tools for each size, thread inserts for each size, all come complete in a handy storage case. Specification 100% brand new