①. 【Sturdy and Durable】All metal parts of the umbrella stand are made of durable metal, including the screws. Since the hole at the bottom of the umbrella stand allows rainwater to drain, one doesn't have to worry about the umbrella stand being rusted and corroded by rainwater. ②. 【Space - saving】This umbrella stand can save more space on decks, patios, gardens and other outdoor areas. There are no more heavy and annoying umbrella bases on the patio or balcony. What's more, it is portable, so one can take it anywhere and use it outdoors. ③. 【Easy to install】No tools are required. Just attach it to 6cm thick railings, countertops, decks, stands, etc., tighten the screws to secure, then place the umbrella on the metal tube with an inner and outer diameter of 4cm. ④. 【Size】The metal tube is 15.5cm long and 6cm inner diameter; Clip adjustment range: 0 - 6cm. ⑤. 【Scope of application】It is suitable for any angled surface, such as: decks, stands, sterns, boats, fences, etc.