A professional tool designed for efficient lubrication, employing high-pressure dual-piston technology to ensure even grease injection and reduce friction loss. Its thickened piston design makes operation easier and suitable for extended periods. The transparent, leak-proof structure allows for easy monitoring of oil levels, preventing waste. Widely used in the routine maintenance of automotive, construction machinery, and other equipment, it improves maintenance efficiency and is an indispensable tool for repair personnel.