Ray, it's called "Handles and Guards" and has lots of tips in it.
Almost a "must have" for any level maker.
I tried the softer stuff first, like brass and nickel silver, but in fact, the 1/2 hard silver is easier to work with!
The tensile rigidity of it sort of helps to keep it in place as you make "slow" turns and such. It also doesn't get sharp kinks in it as easily as it sort of resists this from happening.
When you consider the price of the sterling silver wire, it'll still only cost you maybe 3 dollars to do both sides of a knife.
My recommendation would deffinitely be for 1/2 hard sterling silver.
But, that said, I think the next one's gonna be nickel silver!