Sturdy and : The umbrella stand's so parts are made of heavy-duty metal , including thumb screws. There is an opening at the bottom of the umbrella stand to drain the rainwater, so you don't need to worry about the umbrella stand being corroded and rusted by the rain. Save Space: The umbrella stand saves more space on decks, patios, gardens and other outdoor places, no more heavy and annoying umbrella bases on your deck or patio. Also it is portable, you can take it anywhere outdoors to use. Easy to install: No tools needed. You just clip it on the railing, table, deck, , etc. within 2.3 in thickness, tighten the screws to hold it in place, then put the umbrella within 1.57 in outside diameter in the metal tube, and finally tighten the screws. Size : Metal tube length: 6 in, inner diameter : 1.57 in; Adjustment range of clips: 0-2.3in. Application scope: It is perfect for use on any corner , such as deck, , , boat, fence, etc. Colour:black Material:Metal Size:15cm Package Contents: 1 x Patio Umbrella Stand Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.