The Tackle Tactics Knife Sharpener 3-Stage is designed with quality materials for lasting durability and features bright yellow highlights so its easy to locate in the boat, kayak or backpack. It has rubber base pads giving it a non-slip grip for safety and ease of use. The course tungsten plates remove all burs to create a smoother finish to sharpen further. The diamond edge creates a smoother edge again ready for the final finish. The ceramic plates polish the blades to a very fine edge finishing the sharpening task to perfection.