Each retractable trolley pen holder is secured with a screw on the back, so you don't have to worry about it coming off.
Retractable Pull Pen Pencil Holder Universal Pen Lanyard With Belt Clip Key
Retractable Pull Pen Pencil Holder With Belt Clip Key Ring Universal Lanyard
Retractable Pull Elastic Silicone Pen Pencil Holder with Belt Clip and Key Ring
Retractable Pull Pen Pencil Holder Universal Key Ring Creative with Belt Clip
