The pic you've got does indeed look like them... but I'd have to see the screw to actually be sure. Cranford's key to their success is an extremely gradually tapered screw from the needle-sharp point all the way back the length of the threads... That's why Ameristep's screws (at least they're more widely popular ones I used to see) require a drill or something else to get them to work (meaning they DON'T work, if you want my opinion). Ameristep's point "rounds out" and "thickens" to the width of the screw almost immediately. To be fair to Ameristep, someone posted a pic on here of one of their newer designs which looked a lot better -- but it was clearly an attempt to copy Cranford, for good reason.