QILERR Tension Rods QILERR tension rod two sizes adjustable 40-70 cm/70-120 cm, Inside and outside tube diameter: 1.4cm Rods contain stainless steel SK8 strong rough spring, two non-slip rubber pad, a strong stretch to extend enough to support the force, bearing is 2 times the ordinary product Scope: can be used for doors and windows support rods, wardrobe bars, drying support rods, suitable for lightweight, bear about 4 lb HOW TO CHOOSE? When selecting the telescopic rod, you should measure the length of the doors and windows, the actual use of length and telescopic rod length is the same, think of the best. Non-Slip And Durable PVC material non-slip ends, with deepened thread design to increase friction.As long as the spring is compressed tightly enough, the pull rod will not fall easily.