Yes no perhaps maby
So if you go to the Stens web page , in the top menu bar select resources at the far right > quick reference guide > chart - blade size
All of their blades are listed by length which is the diagonal length from corner to corner
This is a PDF file so you have to print it out or download it
Next if you type the part number of your blade that you wrote in your owners manual along with the belt number you will see your blades listed with all of the dimensions
length , width , thickness & ø
Also if it is flat or stepped along with a picture .
If you want some one else to do all of the work for you then you will need to post the model & serial numbers off the ID tag so they can look them up ( note not me )
There are common sized holes so usually lots of different blade options
I have commercial customers who will use up to 4 different blades depending upon the season, when it rained last , what type of grass they are cutting so there is not such thing as "the best blade" .
What you are aiming for is the right blade for you & your lawn so do not be afraid to try several different shapes.
You can also go for a slightly longer blade & cut them shorter but they must be balanced very carefully .
Sandy soils are best cut with medium or low lift blades because the sand wears the flutes out very quickly
Heavy clay soils usually suit high lift blades but every different lift will make the clippings behave differently under your deck
So experiment
After market blades are fairly cheap even the Gators but for those you need to know the part numbers to cross reference to
