Anti-wrap design: the flag pole rings are deigned with a rotating anti-wrap ring, which allows flags fly freely in the direction of the wind, and preventing the flag from wrapping around the flagpole Material and size: flag pole rings are made of aluminum alloy, durable and no rust for you to use with a long time; The inner diameter of ring is 1 inch, so it's fit for 1 inch diameter flagpole, measure the diameter of your flagpole carefully Easy to install: you just need to install the 4 aluminum alloy mounting rings to the flagpole, then attach the top/ bottom grommets of the flag to the clip located on the rings, and then adjust position on the flag pole Crafted equipment: there are 4 pieces clip hooks for you hanging the clip between the flagpole ring hole and the flag grommet, which help you to connect the flagpole and flag, let you apply more easily Size:the inner diameter is 1 inch/ 2.54 cm, the outside diameter is 1.46 inches/ 3.71 cm and the height is 1.18 inches/ 2.99 cm Colour:black Material:Aluminum alloy Package Contents: 4 x Anti-wrap flag pole 4 x Clip hooks Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.