it's for squeezing people's heads until their eyeballs pop out.....actually it's to hold the ski locked in place so you can wax/tune it - vice attaches to bench, holds ski tight.....yah it's possible to wax skis without vices, i do it all the time, but you're an idiot if you try to do edge work without them
-Strode
Abba Zabba, you my only friend