You can easily attach your roof box, surfboard or ski to the wall with this set. The holder is made of steel and has been partially coated with PE foam. The coating prevents any scratches caused by use, which ensures durability. The arms are adjustable from 33 to max. 57 cm wide. The bracket is made of high quality steel. Features solid and sturdy construction to ensure durability. Width: 33 - 57 cm. Material: Steel, PE foam. Box contents: 1 x wall bracket (2 arms), 1 x screws. Caution: The product must be installed as shown in the picture. The reverse mounting ensures no stability.