Prime-Line FL 3020 Spiral Tilt 3/8 In. x 30 In., Tilt Red Single Pack - New Description: This FL series spiral tilt balance is constructed of a mill-finished metal tube measuring 3/8 inch in diameter. The red-colored nylon bushings of these spiral tilt balances indicate their spring weight is for sash of medium weight. These spiral balances are used on vinyl single hung tilt windows. Key Features: - Used to counter-weight the moving sash on single and double hung sliding windows - 3/8 inch tube diameter x 30 inch length - Red bushing - Steel and plastic components - Please refer to the line art drawing for dimensions and compare with your needs before ordering