This is a compact, portable, round diamond sharpener that is ideally suited for the fisherman, sportsman, or the outdoors person. This hook and knife sharpener is one of the best in the market place.The EZE Lap Model ST is made for portability. Because it's small and easy to stash, you can take it on nearly any trip you go on. The E-Z LAP diamond sharpener is made in the USA and is impregnated with diamond to last and last.Its Diamond Shaft with a Rat Tail stores in an Aluminium Handle with Pocket Clip. The EZE Lap Rat Tail Sharpener sharpens all blades including serrations. This Sharpener should be part of every Tackle Box or every Hunting Pack.