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The Astro Pneumatic Tool 1822 1/2Nano Impact is the latest in miniature lightweight impact development. At only 3.85long or about 1/2longer than a credit card the twin hammer 1822 Nano Impact is deceivingly powerful registering a max of 450 ft./lbs. of torque. The 1822 was designed to be extremely light 3.0lbs. and well balanced when connected to an air line and operates in 3 forward and reverse speeds. Featuring a twin hammer design for increased reliability and coming from Astro’s robust Onyx line this impact has more than just the numbers behind it.