20Pcs 302 Carbon Steel Self Tapping Thread Insert Screw Bushing Repairing Kit Repair Insert(M6*1.0 Outer M9*1.0)

【Durable to use】Made of high quality carobn steel, large contact area, it can bear strong tension, strong resistance to vibration which can prevent loosening. 【Widely used】Easy and convenient to install, widely used in the automotive industry, rail vehicle industry, shipbuilding industry, household appliances, construction machinery, business machinery, electronic products, engineering plastics, advanced furniture, aluminum die-casting and other industry. 【Easy to operate】Self-tapping screw sleeve has teeth inside and outside, which can be embedded in soft materials such as plastic, aluminum alloy, cast iron and copper to form internal thread holes with higher strength. 【Directly screwed into】Self-tapping screw sleeve can also repair broken internal threads. Self-tapping screw sleeves need not be tapped in advance for installation, but can be directly screwed into specific holes reserved in the base material by using installation tools. 【Higher strength】The same screws can also be used for the original female threads of broken teeth, which is economical and beautiful, and can increase the thread strength for new products.