Holds Glass From Outside Surfaces While UV or Silicone Adhesive Cures CRL Fixed 90 Degree Outside Surface Tool holds glass panes from the outside surfaces. Glass panes can be fixed at 90 degree angles and adhered by UV-glue or silicone adhesive easily. The 2-3/8 inch (60 millimeter) rubber suction pads hold glass panes firmly until the adhesive cures and they stick to each other.