This compact knife sharpener from Herbertz can always be on hand for outdoor use due to its small size. For sharpening the blades, there are 2 different pull-through openings with 33 and 40 degree angle inserts made of tungsten carbide. The black housing is made of an aluminum alloy and features a round finger hole in the middle for a secure grip on the sharpener. A lanyard hole with a ball chain completes the equipment.