DURABLE CR-V STEEL: Made with forged and heat-treated chrome vanadium steel for lasting strength and extra durability. To prevent rust and corrosion, the combination wrench is featured with a polished chrome finish for effective rust and corrosion resistance. 72-TOOTH RATCHETING: 72-tooth ratcheting box end needs only a 5-degree minimal swing arc to operate it. Perfect for working at these confined areas.They are an ideal option for motor mechanics, motorcycle repairs, and many more applications. 12-POINT & OFF-CORNER DESIGN: 12-pointed box end provides a more precise and exact fit. Distributes the force on the round but not corners to prolong its lifespan and protect the fasteners. AFTER-SALE SUPPORT: You will enjoy the dedicated service of our professional customer service team. No matter if you have any questions, feel free to contact us and we will make you satisfied.