Marbles Redi-Edge Pocket Pro Knife Sharpener. Measures approximately 3 x 7/8" x 1/4". Hardened ceramic honing surface chemically bonded to black anodized aluminum handle. Side of sharpener has "V" groove for sharpening fish hooks, broadheads and other pointed objects. Features Duromite cutter sharpening inserts. Easy to use. Hang packaged." Measures approximately 3" x 7/8" x 1/4". Hardened ceramic honing surface chemically bonded to black anodized aluminum handle. Side of sharpener has "V" groove for sharpening fish hooks, broadheads and other pointed objects. Features Duromite cutter sharpening inserts. Easy to use. Hang packaged.