I just bought the Seam-fix one and love it! It does have a round handle that comes apart like a pen. The opposite end has a large rubber-like tip that you use to rub back and forth to take all those millions of little threads that have been ripped out. So now, I don't have to sit and pick out all those little cut threads after ripping a seam! I just had to rip out two, 60" sashings, today and, boy, did that rubber thingy work good!!