Latest heavy-duty air angle grinder from associated pneumatic tools comes with following specifications: size - 4"; air pressure - 90 psi; air consumption - 6 cfm; length - 9"; and weight - 1.8 kg. The body of these grinders is made out of high quality die cast aluminium. Other features are lever throttle, side exhaust, side handle for greater control, hardened gears for durability and built-in regulator for speed control