This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most economically treated to provide a high quality decabromodiphenylethane product. The curled tip tool extends from and retracts into a hollowed shaft via a spring-loaded button that is positioned at a distal end of the shaft. As presently proposed, the technique is particularly adapted to transgastric peritoneoscopy. If the rotating element is turned in the opposite direction, the engaging element separates from the locating element and the fixing rack can be separated from the housing.