Specification: Item Type: Pneumatic Air Chisel Model: KP 764 Material: Aluminum Alloy No Load Speed: 4000rmp Impact Speed: 4000bpm Working Air Pressure: 6.2kg/cm Intake Port: 1/4in Air Consumption: 6cfm Working Pressure: 0.6Mpa Piston Stroke: Approx. 22mm / 0.87in Product Use: Mainly used for sand cleaning of castings and deburring of small and medium sized castings, shovel cutting of weld grooves, correction of openings in stone, concrete and brick walls Package List: 1 xAirChisel 1 x IntakeConnector 1 x Shovel Note: Handle color random delivery.Operation Suggestion:1. Before and after use every day, please inject 23CC of #60 pneumatic lubricating oil (sewing machine oil) from the air inlet2. Let the machine idle for a few seconds after filling with oil3. Generally, the air source compressed by the traditional air compressor contains water, and the lubricating oil in the air compressor brought out by the aircompressor piston. If the oil water separator is not used, the water and oil enter the pneumatic tool with the air, which will cause wind If the blade is stuck, once the tool is started, the blade will not be thrown away, and it may not even be able to start. If it can be started, the torsion will be insufficient. Be sure to pay attention to refueling regularly to keep the tool at normal torsion.