180 Screwdriver Set For Precision Mechanics: Consisting Of 140 Bits And 40 Disassembly Tools, If You Need To Repair Or Assemble Precision Equipment And Need Personalized Solutions In Terms Of Design And Performance, This Tool Kit Is Your Best Bet.Widespread: In Addition To Repairing Electronic Equipment, It Can Also Be Used To Repair Carburetors, Lawnmowers, Motorbikes And Other Carburetor Systems. Suitable For Electric Screwdrivers, Can Be Used For Large Furniture And Household Appliances.Robust And Durable: All Drills Are Made Of High Quality S2 Steel. The Hardness Can Reach Hrc (58-62), Which Is Tougher And More Durable Than Ordinary Steel Materials. All Drills Have Been Subjected To Strict Quality Controls.Multipurpose: The Length Of The Screwdriver Handle Can Be Adjusted. If You Are Using An Extension Rod, You Can Adjust The Length As Needed. There Is Also A Soft Extension Rod That Is Suitable For Narrow Corners.Easy To Carry: With A Professional Nylon Storage Bag, It Offers Complete Protection And Is Easy To Store And Carry. Adequate Design And Layout, Stable And Uniform Positioning, Parts Are Not Easy To Fall Or Lose.