· SHARPAL 101N: 6 FUNCTION: 1. No. 1 V-Notch slot (Coarse CARBIDE)-Quickly set a new edge; 2. No. 2 (Fine CERAMIC)-Hone for a smooth finished edge; 3. Tapered diamond rod (Medium 400 Grit) for serrations & gut hooks; 4. Diamond rod with groove for fishhooks; 5. Ferro rod; 6. High-pitched emergency whistle· SHARPAL 101N: A portable EDC field survival knife sharpener with built-in lanyard hole, ideal for hunting, camping, outdoor survival use. It also works well for your kitchen chef knife.· SHARPAL 101N: DURABLE ABRASIVES & SUPERIOR SHARPENING PERFORMANCE: The CARBIDE and CERAMIC abrasives pass 10,000 times field use test. NEVER WEARS OUT. Preset optimal sharpening angle.· SHARPAL 129N: Durable tungsten carbide blade: This tungsten carbide sharpener is widely used for quickly sharpening or repairing damaged blades. It is particularly common in gardening, where it can be employed to hone nearly all types of garden tools.· SHARPAL 129N: Pure Ceramic blade: This ceramic blade component is designed primarily for fine honing tasks. It effectively removes residual burrs from blades previously honed with tungsten carbide tools. Additionally, it can be employed directly on delicate blades that require gentle handling to preserve their sharpness, making it ideal for kitchen knives and similar utensils.