Professional tool for commercial or occasional use Ideal for repairing damaged or striped internal threads Protects tapped threads against wear and damage Creates a stronger internal thread in soft materials. Set Includes; 10 x Helicoil inserts 1 x Drill bit 1 x Thread tap 1 x Insert installation tool 1 x Lug breaking punch 1 x Allen key Supplied in a blow molded case for easy storage and transportation.