Each set includes 60pcs resistant stainless steel inserts with standardized dimensions, offering complete thread repair coverage from small electronics to heavy duty applications This 60piece stainless steel wire thread insert set ( 3mm-12mm) provides a durability thread repair solution with 7sizes, enhancing screw connection strength and wear resistance for low strength materials while absorbing vibrations Ideal for mechanics, enthusiasts, and maintenance professional needing reliability thread reinforcement in automotive, machinery, or electronic equipment repairs Featuring locking wire inserts and spring washers, these stainless steel inserts distribute load evenly, thread misalignment, and restores damaged threads without deformation for long last fastening Perfect for restoring threads in engine blocks, industrial equipment, or household appliances where vibrations resistant fastening and repeated screw adjustments are required, Manufacturer: ZYKEJJDDAK