The bypass shear is an essential tool in metal construction and roofing work. It allows for fatigue-free operation with minimal effort. Hand sheet shears should only be used for cutting thin sheets of soft metals or steel and are not suitable for cutting through round or angular metal shapes such as wire. Cutting tools should only be used by hand and without additional aids. When working, safety glasses and gloves should be worn, as cut-off parts can cause injuries. Improper use can result in personal or material damage. When working on electrical installations, the connection to the power source should be interrupted to avoid electric shocks. The cutting direction of shears and knives should always lead away from the body. Cutting tools should always be placed with the blades closed in a clearly visible location, with the handle facing you.