Features: This is a small piston structure (tank volume: 0.6L) manual pump. Working principle: When the handle is pressed by hand, the piston moves up and down under the action of a lever, which is a process of oil absorption; when the handle is loosened, the piston moves downward under the action of the spring force, and is an oil discharging process. The pump can be combined with a throttling distributor to form a centralized lubrication system. It is suggested that the oil viscosity is N20-N500. Left hand operated method, 4mm oil outlet diameter. Widely used in lubrication system of CNC machine tools, machining center, production line, forging, textile, plastic, wood, rubber, mining, metallurgy, construction, printing, casting, auto, food and other mechanical equipment. Specifications: Model: HP-5L Drive mode: Left hand operated Spit: 5ml/min Maximum discharge pressure: 5kgf/cm Capacity: 650cc Outlet diameter: M8*1(4mm) Weight: Approx. 541g / 19.1oz Package List: 1 * Manual Lubricating Pump Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List 1This is a small piston structure (tank volume: 0.6L) manual pump. 2Working principle: When the handle is pressed by hand, the piston moves up and down under the action of a lever, which is a process of oil absorption; when the handle is loosened, the piston moves downward under the action of the spring force, and is an 3The pump can be combined with a throttling distributor to form a centralized lubrication system. It is suggested that the oil viscosity is N20-N500. 4Left hand operated method, 4mm oil outlet diameter. 5Widely used in lubrication system of CNC machine tools, machining center, production line, forging, textile, plastic, wood, rubber, mining, metallurgy, construction, printing, casting, auto, food and other mechanical equipment.