Material: Made of industrial grade steel, coated with chrome finish, stable and durable. Easy and safe to use. Ideal for loosening or removing firmly tightened or rusted screws or bolts. The impact driver loosens rusted or frozen screws and stubborn fasteners with a non-slip grip. It's an essential tool in your toolbox to help you save time and improve your work efficiency. The handle is non-slip and comfortable to hold thanks to its ergonomic design. Detachable head, can be used with bits and plugs. Screwdriver to loosen tough, quickly frozen screws and fasteners. Convenient: Bits are organized and stored in a plastic case that's convenient to store and carry. Widely used: the screwdriver set can be used to repair phones, TVs, computers, laptops, watches, air conditioners, glasses, cameras, printers, household appliances and other electronic devices. Screwdriver bits impact: 8x70mm slotted screwdriver (1pcs), 8x70mm Phillips screwdriver (1pcs), 8x35mm flat screwdriver (2pcs), 8x35mm Phillips screwdriver (3pcs). Applicable to the following situations: remove invalid screws, screws need to be strengthened, used for rusty screws.