The Milwaukee M18 FUEL 1/4 in. Hex Impact Driver w/ ONE-KEY is a compact cordless fastening tool built for high-speed screw driving, lag fastening, and controlled self-tapping work. Milwaukee lists 2,000 in-lbs of torque, up to 4,300 IPM, a POWERSTATE brushless motor, and a 4.6 in. overall length with ONE-KEY compatibility. This tool-only configuration fits users already on the M18 system who want connected tracking and setup control in a premium hex impact driver.
Does the 2857-20 include a battery or charger?
No. The 2857-20 is sold as a bare tool and uses Milwaukee M18 batteries sold separately.
What bits fit the 2857-20?
It uses standard 1/4 in. hex impact bits.
Does the 2857-20 support ONE-KEY?
Yes. Milwaukee lists this model as ONE-KEY compatible.
# Milwaukee M18 FUEL 1/4 in. Hex Impact Driver w/ ONE-KEY **Model:** `2857-20` **Brand:** Milwaukee **Category:** Impact Driver > The Milwaukee M18 FUEL 1/4 in. Hex Impact Driver w/ ONE-KEY is a compact cordless fastening tool built for high-speed screw driving, lag fastening, and controlled self-tapping work. Milwaukee lists 2,000 in-lbs of torque, up to 4,300 IPM, a POWERSTATE brushless motor, and a 4.6 in. overall length with ONE-KEY compatibility. This tool-only configuration fits users already on the M18 system who want connected tracking and setup control in a premium hex impact driver. ## Specifications | Attribute | Value | |---|---| | Product Type | Impact Driver | | Voltage (V) | 18 | | Cordless / Corded | Cordless | | Power Source | Battery | | Motor Type | POWERSTATE Brushless | | Tool Only | Yes | | Batteries Included | 0 | | Charger Included | No | | Piece Count | 1 | | Height (in.) | 7.5 | | Length (in.) | 4.6 | | Weight (lbs) | 2.2 | | Width (in.) | 2.43 | | Battery Platform | M18 FUEL | | Chuck Type | Hex | | Chuck Size (in.) | 0.25 | | Hammer Function | No | | One Key Enabled | Yes | | Warranty | 5-year limited | | Max Torque (in-lbs) | 2,000 | | Maximum Ipm | 4,300 | ## What's Included - (1) M18 FUEL 1/4 in. Hex Impact Driver w/ ONE-KEY (2857-20) Source: https://www.jaspecs.com/milwaukee/impact-driver/2857-20-m18-fuel-1-4-hex-impact-driver-w-one-key/