Is this the same as the professional or standard set on the Wolff website?

The difference in the 3 machines is the buffing wheel. Otherwise, they are exactly the same. The standard is meant for home use, by people who are hobbyists and who sew. The buffing wheel is a standard cloth buffing wheel which will work for smaller scissors. It is not made for industrial and pro applications and the edge will go dull quicker. The industrial honing wheel is a 350 grit wheel that will leave a slightly "toothier" edge on your shears. This means it won't slip on the material you are cutting, but it won't cut very fine material as well as the pro version. The pro version has a 400 grit honing wheel so the edge is slightly more refined. It's great for cutting fabric and cloth in high volume. I hope that all makes sense and please let me know if you have any other questions.

Do i need to buy the clamp to sharpening professional shears and thining shears?

Yes if you want to set the cutting angle and edge even and straight

Is this the same pro model that Wolf sells for $471?

I didn't expect to get a 400 grit diamond wheel with this. I believe the pro set comes with the 800 grit wheel. Also I do not know what comes with the pro machine

ASIN	B000ROEIG6
Best Sellers Rank	746,332 in DIY & Tools ( See Top 100 in DIY & Tools ) 997 in Sharpening Stones
Brand	Wolff
Brand Name	Wolff
Colour	Blue Handle
Grit Type	Fine
Grit type	Fine
Item Weight	12 Pounds
Item weight	12 Pounds
Manufacturer	Wolff Industries
Material	steel
Material Type	steel
Number of items	1
UPC	799637493827
Unit Count	1.0 Count

Wolff Twice as Sharp Pro Scissor Sharpener by Wolff

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