If you have to loosen or tighten a lot of bolts or nuts, this will be a lot faster with this powerful reversible air ratchet.With a manual ratchet this not only takes a lot of time but also takes its toll on your hand and arm muscles.Using a compressor makes this job much faster and easier.Technical data:3/8" DriveAir pressure: 6.3 barWeight: 1.15 kgRevolutions per minute: 160 rpmReversible, turning left and rightMaximum torque: 61 NmAir inlet connection diameter: 1/4"