Bosch GDS18V-450H 18V Brushless Cordless Impact Wrench 1/2 inch (Bare Tool)

In a busy automotive workshop, a technician reaches for the Bosch GDS18V-450H to remove a stubborn, rusted axle nut. With a squeeze of the trigger, the brushless motor delivers 450 Nm of tightening torque and up to 800 Nm of breakaway torque, loosening the fastener in seconds without drama. This cordless impact wrench brings professional-grade power to tire changes, assembly work, and heavy machinery maintenance, all without the constraints of a cord.

Key specifications

• Power source: Cordless (18V Bosch Professional system)
• Motor: Brushless for efficiency and long life
• Tool holder: 1/2 inch external square drive
• Max. tightening torque: 450 Nm
• Max. breakaway torque: 800 Nm
• No-load speed: 0-600 / 0-1000 / 0-1600 rpm (3 gears)
• Impact rate: 0-1200 / 0-2000 / 0-2800 bpm
• Speed settings: 3
• Automatic Bolt Release (ABR): Yes
• Integrated LED light: Yes
• Included components: Bare tool only (battery and charger not included)

Why choose it

The GDS18V-450H combines raw power with intelligent control. Its brushless motor ensures maximum runtime and durability, while the three speed/torque settings let you match the tool to the task—from delicate fastening to full-power loosening. ABR technology prevents overtightening and accidental bolt breakage, and the LED light illuminates dark work areas. As part of the Bosch Professional 18V system, it shares batteries with a wide range of tools, reducing your investment.

Ideal use cases

• Automotive repair: lug nuts, suspension bolts, axle nuts
• Assembly and disassembly of steel structures
• Maintenance of agricultural and construction machinery
• Industrial fastening where high torque is required

Good to know

This is a bare tool—battery and charger are sold separately. It is compatible with all Bosch Professional 18V lithium-ion batteries. For best results, use with high-capacity batteries (e.g., ProCORE18V) to achieve maximum torque. The 1/2" square drive accepts standard impact sockets. Weighing approximately 2.9 kg without battery, it is balanced for extended use.