Clear works well with any color beaded chain Can be used for rollers, romans and vertical blind chain Will work on both plastic and metal chain. Photo 2 - shows top four chains that are 4.5mm #10 ball chain the bottom shows same connector with chain that is 3.2mm #6 ball chain Works like a clam shell snapping closed around both ends of the beaded chain. A 15% restocking fee or more will be charged for returnsDepending on the condition when we receive.