171pcs socket wrench set for auto repair and mechanics tools1、Multi Size Included: Package includes a variety of sleeve sizes and types for nuts and bolts of different sizes to meet a variety of repair and assembly needs. 2、Efficient Operation: Equipped with a ratchet mechanism, it can rotate continuously without repeatedly swinging the handle, greatly improving work efficiency. 3、Durable Materials: Made of high strength alloy steel material, it has excellent durability and corrosion resistance, and can withstand long term use and harsh environments. 4、Widely Application: Used for tightening or loosening most bolts, nuts, screws for maintenaning automotive, mechanical, motorcycle, etc. And also a great repair tool for home use. 5、Compact and Portable: The compact and organized carrying case makes it easy to transport and store the set, ensuring that you have the necessary tools readily available for repairs on the go.