With the outside two rows of holes inverting, this type of plate helps to aid the mixing of the melt. Sometimes helping to reduce staining on light colored and clear profiles. Built to Factory original tolerances and made from wear and corrosion resistant 440C stainless steel, this breaker plate is designed to fit in a Davis Standard thermatic 2.5" extruder. Specs = .874-.876" thickness, 3.241-3.244" OD, 2.5" x .250 screen pack recess with 10 degree undercut. Contact us for quantity discounts or to apply for net 30 terms.