This spring tension roller assembly is constructed from steel and has been heat treated converting it into a high tension steel spring. It features a 1/4 in. wide center-grooved wheel at 1 in. in diameter. This roller assembly is used on patio sliding screen doors by many patio door manufacturers.

This spring tension roller assembly is constructed from steel and has been heat treated converting it into a high tension steel spring. It features a 1/4 in. wide center-grooved wheel at 1 in. in diameter. This roller assembly is used on patio sliding screen doors by many patio door manufacturers.