Quality: 23.5 x 8 x 28.5 cm (widthx heightx length) of steel made of high quality workmanship. Installation: As there are 4 boreholes, the carrier can be installed on the roof. Adaptability: suitable for all kinds of wind vanes (diameter: 10- 13mm). Suitable for most roofs and ridges. The weather vane can be conveniently fixed with locking screws. Material: metal colour: black Package Contents: 1 x weathervane roof bracket 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.