Black Curtain Poles are crafted using sturdy metal. Our black curtain poles with a diameter of 2cm and a thickness of 0.7 mm, which makes this heavy duty curtain rod more sturdy, stable and durable, and will reduce risk of bending and sagging. The curtain poles for window can hold up to 30 pounds. There is no need for extra nuts to connect the curtain rods. Simply tighten the screw holes on the connecting rods to perfectly connect the two curtain rods. Compared with other structures, our curtain poles is stronger and more durable. Our black curtain poles can be freely adjusted in size, ranging from 80cm to 266cm. You can adjust the length you need through the combination rod to fit different size windows. Curtain poles are made up of several 40cm rods of the same size, which can be freely spliced to the size you want. Our black curtain rods feature easy splicing installation, so you can easily resize them. Simply add or remove sections of the rod to achieve a perfect fit with your windows.