Cantoo,<p>Yes you can use them for Walker blades. In fact when i first bought mine 5 or 6 years ago I had no idea why you would need the wheel to go in two directions, until I bought my walker in '97 and found left handed blades. The RBG's do work great, definately get a dressing stone of some type,(grainger, $ 7.00) as the stone will get out of balance. Another note, always grind your blades up the blade. If your grinder keeps sucking your blade into the stone then your going the wrong way. Doing this will overheat the blade, take of too much steel and make grinding blades unenjoyable. One last thing, the grit collectors are worth the additional money if you dont want a ton of grit throughout your shop.