In my option, they would be a little short for the 2.5" width of the Mecanum wheels.
The "3 wide" ones would work better.
http://banebots.com/pc/WHB-HM-HS4-M6/T40H-SM63
These are only about 1.5" wide, so will not go all the way through the 2.5" wide Mecanum wheel. Could test and see if would work.