In the add for Mag Cup Holder it states "The force of the five magnets provides more than enough strength to hold the Mag Cup Holder on your tractor, even when you're doing high-vibration jobs like field mowing or tilling." That is a total misrepresentation of the facts. Those magnets are so week that when you try to open the Velcro storage area it pulls the entire Mag Cup Holder right off the tractor no matter where it is placed. A TOTAL RIP OFF. DO NOT BUY !!!!!!!!!!!!!!!!!!!!!!!!!