I just saw this photo on the Timbecon website. The add contains the following text:
"Helps to keep the stock against the fence on router tables and saw benches, etc. Reduces the kickback and chattering. Fits 19mm mitre slots. Used in conjunction with the push stick, it makes for safe and trouble free sawing. "
I've had a table saw accident but even I'm not stupid enough to put my hands where this goose has his.:oo: