This simple design is made to stabilize any ikea pegboard from puling away from the wall when taking something off of it.
They are meant to be used with 3M adhesive / velcro command strips (2cm in width).
Prepare your surface by sanding a little bit, clean the wall , put it in the pegboard from the back and glue everything to the wall. Make sure to leave the tab visible if you don't use the velcro kind.