SPECIFICATION: Item Type: Knife Sharpener Material: ABS Plastic, Ceramic, Tungsten Steel Product Size: L 12cm x W 7.5cm x H 16cm Approx. Function: Rough Grinding, Fine Grinding, Accurate Grinding * HIGH QUALITY & DURABLE - Our manual knife sharpeners are made of ABS plastic and high quality blades slots made from Tungsten Steel which are durable and have a long service life, and can fully withstand the pressure generated during sharpening. * NON-SLIP RUBBER BASE - Heavy duty non-slip Plastic base for ultimate stability & safety - any flat surface in your kitchen will do (no need to find a suitable clean surface, unlike knife sharpeners with non slip base designs). * FOR USE ON - Straight edged steel kitchen knives and wide serrated knives (bread knives), including premium knives with hardened carbon steel blades. * SAFE & COMFORTABLE USE The solid weighted construction lets you have more control of the product to ensure safety and ease of use.