Roto Spiral Ltd. Knocktopher , Co.Kilkenny , Ireland About Solutions products Publications videos Companies Roto Spiral Ltd. Products Screw Mixer Screw Mixer From Other Products 0 Share We manufacture and supply bin dischargers to any specification. Videos related to this product Roto Spiral 2 Video Customer reviews No reviews were found for Screw Mixer. Be the first to review! Add your review Publish your review Great! review successfully added!