• Double-thread screws ideal for joining slats or extending one of them without the joining screws being visible. • Designed for carpentry work, these screws have no head and feature a metric thread on the upper part and a wood thread on the lower part. • The central hexagonal part facilitates tightening or loosening with a wrench. • Suitable for wall or ceiling mounting, as well as for securing objects with a nut to wood, masonry, natural stone, or concrete. • Made of galvanized steel, which provides protection against rust and makes them more durable and resistant. • Require a pre-drilled hole for installation. • Pack of 50 double-thread screws, suitable for solid materials. • Dimensions: Screw diameter: 10 mm, Screw length: 80 mm, Drive: Torx. • Recognized for their reliability, simplicity, and solidity.