Screw Crusher

Screw Crusher (スクリュークラッシャー) is Punk's special weapon. It throws a saw that moves up for a while and then loops down. It is imperative in the battle against the Wily Machine's second form, as it is the only weapon that'll harm it. It does considerable damage, and can be used several times as it doesn't use much energy.

Screw Crusher can also be obtained in Mega Man 10, Mega Man being the only playable character able to use it.

Capacity
In Mega Man III, Mega Man can use eight Screw Crushers with only one weapon energy unit. With a full weapon energy gauge, it can be used 152 times.