Outdoor Edge SharpX, SX-100, 2 Stage Ceramic and Carbide Knife Sharpener with Rotating Stable X Base Perfect, pocket-sized sharpener for maintaining a razor-sharp edge on all your outdoor and kitchen knives Coarse bits are tungsten carbide, Fine rods are white alumina-ceramic Base Zytel (glass-nylon), Grip rubberized orange TPR Dimensions 1.6 by 3.9 by 0.7 inches, weight 1.2 ounces