Metal centre bar slider (strap adjuster) for creating adjustable straps on bags, belts, aprons and pet collars. The central bar separates strap layers to grip and hold length securely, enabling quick, clean adjustments without bulky knots. Ideal with webbing, cotton tape or leather; match hardware finishes for a cohesive look across your project. Built for repeat use in sewing rooms, classrooms and studio production, this notion combines reliable materials with an easy handling experience. It installs with basic tools, aligns cleanly and maintains a polished look after wear. Use it to streamline construction, strengthen stress points and add a professional, store-bought finish to garments, bags and home décor. For best results, test on fabric scraps and adjust needle, stitch length and tension to suit the base material. Great for kits, workshops and teaching new makers confident, repeatable techniques that scale from one-offs to production.