The QSP Knife Penguin XL is the larger version of the QSP Knife Penguin, with premium materials. A cool pocket knife with a distinctive sheepsfoot blade. What's practical about this blade shape is that you can perform very precise jobs with the tip, but you can also put your thumb on the spine of the blade to apply more pressure during more demanding tasks. You quickly open it with one hand, with either the flipper or double thumb studs. A solid framelock keeps the blade in place.