Thumb Screw Lock: The screw lock is manually tightened for secure, slipresistant clamping and laborsaving operation. It can be adjusted to fit the length of the saw blade, ensuring a tight grip during use. Materials: Constructed from steel with hardness, delivering strong performance and resistance to deformation for longlasting durability. Fine Saw Blade: Includes 8 models of hacksaw blades, providing sharp and durable cutting options suitable for a variety of tasks. ABS Nonslip Handle: Ergonomic, comfortable to hold with a nonslip grip. The back cover opens to store small accessories, helping to keep tools organized. Practical applications: Metalworking and maintenance tasks such as cutting steel bars, pipes, and brackets in a workshop or on site. Home projects where a compact, portable saw is needed for precise cuts in tight spaces. Projects requiring blade changes across multiple materials, using the varying blade models for different cutting tasks.