Features: _x000D_ This is a small piston structure (tank volume: 0.6L) manual pump. _x000D_ 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. _x000D_ 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. _x000D_ Left hand operated method, 4mm oil outlet diameter. _x000D_ 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. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Model: HP-5L _x000D_ Drive mode: Left hand operated _x000D_ Spit: 5ml/min _x000D_ Maximum discharge pressure: 5kgf/cm2 _x000D_ Capacity: 650cc _x000D_ Outlet diameter: M8*1(4mm) _x000D_ Weight: Approx. 541g / 19.1oz _x000D_ _x000D_ Package List: _x000D_ 1 * Manual Lubricating Pump _x000D_ _x000D_ _x000D_ Note:_x000D_ 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.