The Milwaukee M18 FUEL 4-1/2 in. / 5 in. Grinder, Slide Switch Lock-On is a cordless 4-1/2 in. / 5 in. angle grinder aimed at grinding, surface prep, and cutoff work where cord management slows down production. Milwaukee lists an 8,500 RPM top speed, a 5/8"-11 arbor, and a bare-tool weight of 5.8 lb with an overall length of 15 in. The POWERSTATE Brushless motor, REDLINK electronics, tool-free guard adjustment, and anti-vibration design are intended to keep output high in fabrication and jobsite metalworking. Milwaukee positions it as a cordless replacement for everyday corded grinder tasks. This tool-only version is best for users who already own M18 batteries.
Does the 2781-20 include batteries or a charger?
No. This is a tool-only grinder.
What wheel size does the 2781-20 use?
It is grouped here as a 4-1/2 in. grinder and also supports 5 in. accessories in Milwaukee's product naming.
What arbor size does the 2781-20 use?
Milwaukee lists a 5/8"-11 arbor size.
How fast does the 2781-20 run?
Milwaukee lists a no-load speed of 8,500 RPM.
How large is the 2781-20?
Milwaukee lists it at 15 in. long and 5.8 lb excluding battery.
Does the 2781-20 have a braking function?
No. Milwaukee does not list a brake feature for this model.
# Milwaukee M18 FUEL 4-1/2 in. / 5 in. Grinder, Slide Switch Lock-On **Model:** `2781-20` **Brand:** Milwaukee **Category:** Angle Grinder > The Milwaukee M18 FUEL 4-1/2 in. / 5 in. Grinder, Slide Switch Lock-On is a cordless 4-1/2 in. / 5 in. angle grinder aimed at grinding, surface prep, and cutoff work where cord management slows down production. Milwaukee lists an 8,500 RPM top speed, a 5/8"-11 arbor, and a bare-tool weight of 5.8 lb with an overall length of 15 in. The POWERSTATE Brushless motor, REDLINK electronics, tool-free guard adjustment, and anti-vibration design are intended to keep output high in fabrication and jobsite metalworking. Milwaukee positions it as a cordless replacement for everyday corded grinder tasks. This tool-only version is best for users who already own M18 batteries. ## Specifications | Attribute | Value | |---|---| | Product Type | Angle Grinder | | 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 | | Length (in.) | 15 | | Weight (lbs) | 5.8 | | Battery Platform | M18 FUEL | | Hammer Function | No | | One Key Enabled | No | | Warranty | 5-year limited (tool) | | Disc Diameter In | 4.5 | | No Load Rpm | 8,500 | | Arbor Size | 5/8"-11 | | Switch Type | Slide with Lock-On | | Has Brake | No | ## What's Included - (1) M18 FUEL 4-1/2"/5" Grinder (2781-20) Source: https://www.jaspecs.com/milwaukee/angle-grinder/2781-20-m18-fuel-4-1-2-5-grinder-slide-switch/