KAW1138 Features: * Air hammer kit * For hammering, punching, scoring and cutting jobs * Lightweight and durable composite housing * 1.63"" Stroke length * 4500 BPM free speed * Requires 90 PSI air input Includes: * Includes 4 chisels Dimensions: * Dimensions: 9.25"" H x 7.5"" W x 2.88"" D