Product review (5 stars): Worked great for me
So I purchased a used electric dryer and it had NEMA 10-30 plug while my wall outlet was NEMA 10-50.

It took me a while to find this cable! I just removed the old cable from the dryer and attached this one.

Warning: cable end without a plug has wire ends that didn't quite worked for me (no big deal, just screw harder). Just make sure you connect each dryer contact to the same outlet contact as it was before.

P.S: [...]