Made from high grade thickened stainless steel and plastic, which guarantee years of usage. Easy installation without any tools, free drilling, do no damage to walls, doors or windows. Extendable rod can flexibly adjust the lenght according to your needs, no longer subject to the constraints of rigid. Convenient and easy to use. Just extending the length of pole to the required length (more than 3cm of actual length) and than push the other end of pole up, make it be parallel to wall. Suitable for window curtain, shower curtain, wardrobe, clothes airing, etc. Size Chart: Rectangular Head Rods: End Size: 6.8x3.7cm/2.68x1.46 inch; Rod Dia. 2.2cm/0.87 inch Flower Head Rods: End Size: 5x5cm/1.97x1.97 inch; Rod Dia. 2.2cm/0.87 inch Round Head Rods End Size: 5x5cm/1.97x1.97 inch; Rod Dia. 2.2cm/0.87 inch Square Head Size: Approx. 5.3x5.3cm/2.09x2.09 inch; Rod Dia. 2.2cm/0.87 inch Package Includes: 1 Piece Extension Rod Note: Since the size above is measured by hand, the size of the actual item could be slightly different from the size above. Due to the lighting effects, monitor settings, etc. There could be some slight difference in the color tone of the pictures and the actual item.