This is the 'Quiet" model

Ingersoll Rand TNT model 2135QTI 1/2"

Ultra Duty Air Impact Wrench
• BPM: 1250
• Hose Size: 3/8" min.
• Max Torque: 1,000  ft./lbs. forward, 949 ft./lbs. rev.
• Model: IR2135QTI
• RPM: 9500 free
• Torque: 68-814 ft./lbs.
• Net Weight: 4.05 lbs.
• Manufacturer: Ingersoll Rand®

.1.8 kg