The CSR 150 pneumatic walk-behind saw from CS Unitec weighs 107 pounds and is easily portable between work sites. It is designed for breaking out concrete and asphalt; and for performing applications such as joint sawing, floor sawing, trenching and road repair. An easy-to-use crank handle raises and lowers the blade for cutting depths up to 7 inches. This 9.5-hp saw is available with a blade capacity of up to 20 inches in diameter. Because the unit is air-powered and emits no exhaust fumes, it can be used indoors. It can also be used wet or dry; a ¾-inch water connection port is built in and it includes a splash guard for wet cutting applications.