I have a murray 42in cut riding mower will a regular blade(it takes 2 21 in)can i use 2 universal blades?
will a regular blade(it takes 2 21 in)can i use 2 universal blades?I know it probably sounds like a dumb question,but the only dumb question s one thats never asked.what i'm trying to ask do I have to buy a riding mower blade
thanks for the help I figure a blade is a blade is a blade is a blade

Yes. The hole in the blade has to be big enough, and put on the right way. The blade can only go 2 ways-right or wrong.
No problem. Make sure the bolt/dowel pattern is the same as your machine.