Suzuki 2 Strokes

I am attempting to replace the outer crankshaft seals on my T500 and the replacement seals I purchased have little nubs around the outboard side (where the snap-ring goes). The ones currenly on the engine dont have these little nubs around the circumference.

Attached is a picture of the kit I bought and you can see the nubs around the outer circumference of the crank seals (the bottom two seals in the picture). Anybody used this kit before? Not sure what to make of those nubs..... Help?????

Update-

Pulled the crankshaft seal today and the seals that came in the kit pictured DO NOT FIT. They are too big both in the outer circumference and the circumference of the crankshaft. I'll have to talk to the seller but they definitely don't fit.

I see these kits on Ebay. Has anyone tried them recently?

I have a T500 motor I am tearing down. This would save chasing down individual seals if they are any good.

You can still buy oem seals.