The Spin Screed consists of an aluminum pipe, up to 22 feet in length, that rolls concrete in front of the screed, cutting off high spots and filling in low spots. Powered by a heavy-duty right angle drill, it can be used on stiff, low-slump concrete or wet mixes. Contractors can switch pipes in a matter of seconds by means of quick disconnects. Spin Screed Inc., 888-329-6039,