DCutlery-Pro's Two-Stage Pull-Thru Knife Sharpener quickly sharpens and touches-up straight knife blades for long-lasting cutting performance. The coarse carbide insert sharpens dull and damaged knives while the fine ceramic insert polishes newly sharpened blades to a razor-sharp finish or touches up already sharp knives. The easy-grip handle with a non-slip base and safety guard adds stability and protects fingers during use. It works easily left and right handed.