The holder can be mounted by itself or in conjunction with our aluminium rails 5401 (size 250mm wide), 5501 (size 500mm wide) and 5511 (size 900mm wide). If the clips are mounted by themselves, please note screws are not included. This clip is made from material ABS plastic, PP and TPE plastic. The clip is designed to support equipment with the diameter of 15-20 mm. This clip is designed for hand brushes and small tube cleaners, allowing for easy and accessible storage of brushware.