Large suction cups provide an extremely strong hold; suction cups are 3.75" in diameter
 
 
 Installs and removes without tools or professional installation
 
 
 Release levers make installing and removing the suction cup grab bars quick and easy
 
 
 Red/Green color indicators on top of the handle shows “safe secure%XE2%X80? suction or to “re-affix%XE2%X80? suction