Our couch arm tray features 10 rows of screw holes on the bottom, accommodating sofa armrests ranging from 1.95 inches to 7.3 inches wide.It is particularly suitable for narrow and thin sofa armrests,offering the flexibility to move the tray towards the edge of the sofa,allowing easy access without obstructing your entry and exit of sofa.It can be easily installed on round,square,or curved sofa armrests,catering to diverse scenarios.