BOSCH GDS18V-221N 18V EC Brushless 1/2 In. Impact Wrench with Friction Ring and Thru-Hole (Bare Tool) - - Amazon.com
HTH181B | 18V High-Torque Impact Wrench with Pin Detent (Bare Tool) | Bosch Power Tools
Bosch® 18-Volt Brushless Cordless 1/2" Square Drive Impact Wrench - Tool Only at Menards®
Amazon.com: Bosch PROFACTOR GDS18V-770N 18V Cordless 3/4 In. Impact Wrench with Friction Ring and Thru-Hole, Battery Not Included , Blue : Everything Else