SHARPAL 101N 6-in-1 Knife Sharpener and Survival Tool features pre-set crossed carbides for quick edge setting and ceramic blades for fine honing. The fold out, tapered Medium 400 Grit diamond coated rod with grooves is designed to sharpen serrations, gut hooks and fishhooks. The built-in fire starter and high-pitched whistle are great for outdoor emergency use. This is the perfect tool for hunters, fishermen, campers, fire and rescue, cooks and more. With its compact body and lanyard hole, you can easily fit it in your pocket or clip it to your hunting pack.