Retsel Mil-rite Mil-master grease tube. This grease tube is used to replace grease on all electric Retsel Grain mills. One tube is required to replace Mil-rite gear motors. Two tubes are required to replace Mil-master gear motors. Instructions are included with with each tube. Please call us after you purchase this item at 208-254-3737 or e-mail us to service@retsel.com and we can e-mail you video tutorial or we can walk you over the phone if you need technical assistance how to properly disassemble, replace the grease , install gasket and re-assemble your Retsel grain mill properly.