These hydraulic pumps are designed for Caterpillar mini excavators models 304ECR, 305ECR, and 305.5ECR. The products are available in a variety of colors and designs, including blue, red, and yellow, and are suitable for a wide range of hydraulic applications. They are equipped with shafts of different sizes and shapes, providing flexibility and compatibility with various types of equipment. These pumps are essential for the efficient and reliable operation of the hydraulic systems of mini excavators, ensuring optimal performance and durability.