Centre bar strap adjuster sized 39mm (1 1/2") for creating adjustable straps on garments, bags, belts and webbing. The centre bar separates the strap layers so length holds securely while still sliding smoothly for quick adjustments. The silver hardware pairs neatly with matching buckles, D-rings and rings for a consistent look across your project. Choose the slider size to match your strap or webbing width for best results in everyday sewing and bagmaking.