- Zinc alloy construction: these cross key wrenches are made of high-quality zinc alloy material, explosion-proof and highly corrosion resistant, ensuring long durability and reliability even in harsh environments. Ideal for professionals and DIY enthusiasts alike. - Versatile multifunctional tool: designed as an all-in-one solution, this set contains 10 multi-function keys, each with a slotted and one Phillips screwdriver, making it suitable for various emergency situations and routine maintenance tasks. Its compact size allows for easy storage and transportation. - Precise fit for multiple applications: equipped with 4 key holes in triangle, square and circle shape, these wrenches are compatible with a variety of fasteners and are therefore suitable for use in places such as trains, cars, elevators, subways, etc. electrical control cabinets. - Custom specifications for efficiency: with precise specifications, including a cross wrench length of 7 cm, socket diameters from 0.31 to 0.51 inches, and slotted and Phillips screwdriver lengths of 4 cm, these wrenches are designed for maximum efficiency and ease of use. The included connecting rod also increases its versatility. Use scenarios - On-site maintenance of electrical control cabinets where quick access to multiple fastener sizes is needed. - Roadside or rail-side emergency repairs and routine maintenance on vehicles, trains, or subways. - Servicing elevators and other confined-space equipment where a compact, multi-function tool is advantageous.