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3/8" Drive Cordless Impact Wrench,18V - 2 Batteries
Model: CT4418

Call 1-888-424-6857


NOTE: This item has been discontinued. The suggested replacement is CT8810A.


3/8" 18 Volt - Cordless Impact Wrench with Ni-Cad Batteries


  • Integrated 0.5 Watt LED light provides excellent visibility.
  • High efficiency rare-earth magnet, 4-brush motor for maximum durability.
  • Micro-controlled digital switch with variable speed - This smart switch protects the impact wrench from overheating.
  • High capacity 2.5 Amp/hour, 18 Volt Ni-Cad battery for long run time.
  • Alloy steel, heat treated, helical gears for maximum durability.
  • Alloy steel hammer and gear carrier for maximum durability.
  • Patented impact mechanism design.
  • Cold-formed alloy steel anvil for maximum durability.
  • Robust design passes 6 foot drop test.
  • Fastest 3/8" impact wrench on the market and will remove a 7/8" bolt tightened at 250 ft.-lb. in less than 5 seconds.
  • Ergonomic design with soft grip handles to reduce user fatigue.


  • (2) Ni-Cad Slide-on Batteries 
  • Battery Charger
  • Tote Bag
  • 18 Volt Cordless Impact Wrench


One (1) year.

Product Specification

Bolt Breakaway Torque:250 ft.-lbs.
Free Speed:2400 R.P.M.
Impacts per Minute:3440
Motor/Battery Voltage:18 Volts
Sound Power Level:108 dBA
Sound Pressure Level:95 dBa
Square Drive:3/8"
Tightening Torque:180 ft.-lbs.
Vibration Level:5.3 m/^2
Weight (with battery):5.5 lbs.

Service Tips
  • Wear safety goggle while using power tools (user and bystander).  Use only impact sockets and accessories.

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