The PROT-TEK's air reversible drills are highly durable and robust, used for various applications, and feature a chuck capacity of 3.8", speed of 1,800 RPM, 1/4" NPT air inlet, 4 CFM air consumption rate, 0.9 kg weight, and length of 195 mm. The 9132KL series 3/8" keyless replacement chuck is included.