Item Extruder Cold Feed Davis Standard 4 1/2" 90mm 4.5" Cold Feed 20:1. One(1) Used Davis Standard 4.5” 120mm 4 1/2" Cold Feed Rubber Extruder. 20:1 L/D, 150hp 1750/2000rpm 500v motor, 17.36:1 gearbox ratio, date 11/88, Serial No. K7439, Order No. 01718 Shipping Terms: Ex works- Ohio.