Costco is moving up in my personal opinion poll. I was disappointed in them several years ago, China quality thing and all. But lately they have been providing better quality items for less money than the other "BIG BOX" stores.Meowky said:So the simple answer is...you need a special side lock adaptor for the blades.
The Michelin blade that they sell at Costco have the proper adaptor piece.
The Canadian Tire ones did not! That's why I was wondering how they were to attach.