This 350-piece self-drilling screw set is designed for fast, efficient fastening across materials such as aluminum sheets, wood boards, PC panels, and angle brackets. Made of 410 stainless steel, the screws offer strong rust resistance, wear resistance, and dependable hardness for long-term use. Deep threads and sharp drill points allow drilling and fastening in one step for a secure hold. The set also includes a Phillips driver bit to help streamline installation tasks. Ideal for furniture repair, construction work, and appliance maintenance.