The Cose Metal Buckle with Rectangular Slider, 20mm in silver, reference 754102, is a rectangular frame-shaped metal buckle used to adjust the length of straps and belts without a fastening function, only a sliding mechanism. The silver finish provides a discreet and modern touch, making it a versatile choice for bags and backpacks of any style. It is an essential accessory for those who make bags, backpacks, and adjustable belts with a more robust finish than conventional plastic.