Quality: Small size, light weight, high quality zinc alloy material, copper plating. Low melting point zinc alloy, good fluidity, fusion welding, easy welding and plastic processing, corrosion resistance in the atmosphere, and easy recycling and remelting of residual waste. Lubricator size compressed air: 1/4 inch male and female thread, suitable for attachment to the tool or for interconnection in the compressed air line. Small, light and portable, very easy to carry. Principle: In an elevator with sliding friction guide shoes, the friction of the bearing increases significantly in the direction of the guide rail without lubricant, which leads to rapid wear of the bearing and loss of friction energy. guide rail lubrication can be used for primary lubrication and relubrication Easy to use: The transparent housing allows you to clearly see the oil level and easily oil it at any time. Loosening the screw for greasing is simple and easy to handle. PROFESSIONAL MANUFACTURING: Professionally crafted and manufactured under strict quality control standards, the oil filler cap can automatically refill from time to time to lubricate the internal parts of the air tool, reduce manual oil filling, reduce wear and extend service life. Description: Brass automatic lubricator connected mainly to the air inlet interface in pneumatic tools. Pneumatic automatic greasing device for 1/4 thread interface. Used to connect the pneumatic hose between the tool and the air compressor. Prevent air tools from overfilling with the filter-oil-water function and automatic oil feed function. Easy to connect all pneumatic tools. Product Description Material: Aluminum Color: Gold Thread Size: 1/4' BSP Thread Installation Position: Installs air tool in air inlet Package includes: 2 * oil lubricator Delivery quantity: 2 pieces Product color: gold Product size: length 55mm Note: Manual measurement, please allow 1-3cm error.