SPI/Mobile Pulley Works designs and manufactures a variety of dredge and slurry pumps. The company has been in operation since 1892. It uses technologies, such as finite element analysis and 3-D modeling. The company offers a range of ball joints that include replaceable wear liners and hydraulically operated quick disconnects. It provides impellers and triathlon, ladder and underwater pumps. SPI/Mobile Pulley Works offers replaceable-edge and rock cutters. The company also provides cutters for hard-packed sand. It specializes in computer-aided design and engineering services. The company offers spur gears and pinions. In addition, SPI/Mobile Pulley Works provides several machining and fabrication services.