The wind spinner is made of steel wire and then copper-plated. The transparent and the red glass ball in facet cut unfold their full fascination in the blazing sunlight and this over many years. he of the Copper Twister shines in the sunshine. The glass balls refract the light and throw it back. This creates many dancing coloured dots on the ceiling and walls. As a side effect, this keeps your pets busy. The ruby-coloured red ball inside and the matching drop are in an appealing colour contrast to the of the spiral! With the hook, nylon cord and ball bearing swivel supplied, the highly decorative wind spinner can be hung quickly and easily in the desired location. It unfolds its attractive optical effect in the apartment as well as in the garden or on the balcony. Hang the wind spinner on a slow rotating battery motor. This give the twister a magical effect. It creates the vision as if the balls were floating and run in the spiral endlessly. Colour: blue Material: metal Size: about 30cm in length Package Contents: 1 x Windmill Spiral tail 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.