... or aluminum drum. The rice rubber roller works steadily with high efficiency, low rate of broken rice; Rubber Roller Character:Hardness is 90 ... heat and abrasion resistance;Offering very strong bonding between rubber and drum;High shelling efficiency up to 95%;The SBR and NBR ... , amber Hardness Shore A90-95degree BrandRoaring Lion, QiaoWang,Yashi,OEM High Quality Rice Paddy Machine Rubber Roller