LINCOLN INDUSTRIAL 5:1 Ratio Bare Stub Oil Pump Black The LINCOLN INDUSTRIAL LNI-84933 Bare Stub Oil Pump is designed for dispensing motor oil, ATF, gear lubrication, and other fluid lubricants from drums or bulk tanks through a lubrication system. This robust pump delivers a 5:1 pumping ratio with a free delivery of 6 GPM, ensuring efficient and reliable fluid transfer for demanding applications.