This 50-piece stainless steel self-tapping thread insert set is designed to repair damaged threads, reinforce screw holes, and improve connection strength. The self-tapping design allows the inserts to be installed directly into a properly sized hole without pre-tapping. Made from stainless steel, these inserts offer strong wear resistance, vibration resistance, and reliable holding power. They are suitable for parts that require repeated assembly and disassembly, making them useful for automotive, machinery, appliance, marine, workshop, and general repair applications. Features 50-piece stainless steel thread insert assortment Self-tapping design for easier installation Helps repair damaged screw holes Improves thread strength and connection stability Wear-resistant and vibration-resistant construction Suitable for frequent removal and reinstallation applications Includes organized storage case Sizes Included 10 pcs M3 x 0.5 to M5 x 0.5, L6 10 pcs M4 x 0.7 to M6.5 x 0.75, L8 10 pcs M5 x 0.8 to M8 x 1.0, L10 5 pcs M6 x 1.0 to M10 x 1.5, L14 5 pcs M8 x 1.25 to M12 x 1.5, L15 5 pcs M10 x 1.5 to M14 x 1.5, L18 5 pcs M12 x 1.75 to M16 x 1.5, L22 Package Includes 50 self-tapping thread inserts 1 storage case