From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
The Thunder Eraser (雷 ゴム, Kaminari Gomu) is an energy wave used by Super No. 17. Super No. 17 moves sideways very close to his opponent as he charges a purple and black energy sphere on his hand. He then fires small yellow energy waves out of the energy sphere point blank against the opponent, inflicting a great amount of damage.
Thunder Eraser is named in Dragon Ball Z: Infinite World.