Features: Provide strong internal thread which resist heat and corrosion when installed. Once fitted their position is held by the radial pressure between the coils and the flanks of the drilled hole. Manufactured from precision stainless steel wire for strength, wearproof and durability. Increase connection strength and fatigue resistance due to the elasticity of wire thread inserts. Great choice for restoring damaged threads in steel, iron, aluminum and anywhere metal threads become stripped, crossed or damaged. Specifications: Model: M3 Material: Stainless steel Weight: Approx. 133g Package Includes: 10 x M3*0.5*1D Wire Thread Inserts 10 x M3*0.5*1.5D Wire Thread Inserts 10 x M3*0.5*2D Wire Thread Inserts 10 x M3*0.5*2.5D Wire Thread Inserts 10 x M3*0.5*3D Wire Thread Inserts 1 x Twist Drill Bits 1 x Wrench 1 x Thread Taps 1 x Breaking Pin Tool Package List 1Provide strong internal thread which resist heat and corrosion when installed. 2Once fitted their position is held by the radial pressure between the coils and the flanks of the drilled hole. 3Manufactured from precision stainless steel wire for strength, wearproof and durability. 4Increase connection strength and fatigue resistance due to the elasticity of wire thread inserts. 5Great choice for restoring damaged threads in steel, iron, aluminum and anywhere metal threads become stripped, crossed or damaged.