The Astro Tools 1831 ONYX 3/8" Palm Impact Wrench - 445ft/lb is designed with a 3.46" impact head length and a reactionless design, which means the impact can be gripped with only a few fingers. This tool features a 20” hose with swivel ends and remote throttle, meaning wherever your hand and arm can fit, you can now impact. This impact wrench ensures there is adequate space behind your hand for the bolt to unthread if held in your palm. You can now achieve true remote impacting access with 445ft-lbs of torque from this all new palm impact!