90 Degree Premier Open SweepThis 90 degree sweep is reversible and can easily be expanded to grow with your herd requirements. 90 Degree Premier Open Sweep PS20 1 When space is a factor, this rugged, economical crowding system fits the bill. Whether you are using it as part of a permanent or portable working corral, it provides a durable and versatile crowding system that helps reduce the labor needed for working cattle. This 90 degree sweep is reversible and can easily be