This helps prevent the clerk when closing the cash drawer from damaging the rear plastic pin holder from cracking and breaking resulting in needing to invest in a completely new cash tray. Other similar priced versions from Sharp, Royal and Sam4s do not have this one of a kind element. https://kameronhfayx.gynoblog.com/34947732/how-950-cash-can-save-you-time-stress-and-money