Graber 5/16-Inch Swivel End Sash Curtain Rods - 2 Rods per Pack (12 to 21-Inch Adjustable Width, White w/Nickel Ends) by Graber Crafted of durable metal Adjustable width of 12 to 21-Inches 5/16-Inch round rod diameter Clearance: 1/32-Inch Includes 2 rods with all mounting hardware and instructions.