A Razor Claw is a held item that raises the holder's chances of landing critical hits. If a Sneasel levels up at night while holding a Razor Claw, it will evolve into Weavile. It can be obtained as a tier 2 special drop. It can also be obtained as a drop from certain Pokémon.
Before Reforged, this item could be used to craft a Grip Claw with the following recipe. It was removed due to many held items being far too easy to make.