Press and hold B to welcome enemies with open, spiked arms, then release B to clamp down on them with a big, bear-trap hug.”
— Description • Nintendo Power
Giant Claws is a combo ability from Kirby 64: The Crystal Shards. Kirby gets it by mixing Cutter with Needle. When used, Kirby's arms become pieces of a bear trap. It will close on any enemy that gets caught. Kirby will not be able to move until he releases the bear trap. This ability is useful in that Kirby can destroy enemies above him, especially ones stationed on platforms.
Kirby's arms become a huge spiked bear trap, any enemy that walks into it will instantly be destroyed. Once the B button is released the clamp snaps shut, easily taking out airborne enemies.
Kirby turns into a giant bear trap that instantly snaps shut.”