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FLEX

FLEX 24V Brushless Cordless 5-Inch 10,000 RPM Variable Speed Paddle Switch Angle Grinder Kit with 5.0Ah Lithium Battery and 160W Fast Charger - FX3171A-1C

  • Based on 64 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Oct 24 – Oct 25
Order within 13 hours and 25 minutes
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Style: Paddle Switch - w/Battery and Charger


Features

  • THE FLEX ADVANTAGE - 20% more power with 24V lithium, 25% longer runtime with THERMA-TECH heat management, up to 50% faster charging with high-power, dual fan chargers
  • SENSOR-FREE BRUSHLESS MOTOR - Every FLEX 24V tool is built around an intelligent sensor-free brushless motor designed to eliminate friction and optimized for higher efficiency and power
  • UNMATCHED POWER - Up to 10,000 RPM
  • TOUCH CONTROL - Adjustable speeds match the application for optimal precision
  • ANTI-KICKBACK - Advanced braking technology lets you work with confidence
  • ONE-STEP GUARD ADJUSTMENT - Fast guard adjustments for every application
  • ERGONOMIC DESIGN - Slim grip for improved comfort
  • FLEX 24V CROSS-COMPATIBILITY - Compatible with all FLEX 24V batteries, chargers, and tools
  • FLEX 5-YEAR LIMITED WARRANTY - Register your new FLEX tool, battery, or charger within 30 days of purchase to receive a 5-year limited warranty; 3-year limited warranty without registration

Description

The FLEX 24V 5" Variable Speed Angle Grinder with Paddle Switch delivers next- level advantages to the jobsite. Unleash up to 10,000 RPM of unmatched power, but also work with confidence. Key features include anti-kickback protection, vibration suppression, one-step guard adjustment, and adjustable touch controls. This angle grinder's ergonomic design and exceptional runtime keep you going and going. All this is powered by the FLEX Advantage (unmatched 24V battery power, runtime, and charging capabilities).

Brand: FLEX


Material: Plastic


Product Dimensions: 12.6"L x 4.1"W x 3.1"H


Style: Paddle Switch - w/Battery and Charger


Power Source: Battery Powered


Power Source: Battery Powered


Voltage: 24 volts


Wattage: 160 watts


Maximum Rotational Speed: 10000 rpm


Horsepower: 0.21 hp


Compatible Disc Grinder Tool Models: Flex FX3171A-1C


Material Type: Plastic


Item Dimensions L x W x H: 12.6"L x 4.1"W x 3.1"H


Style Name: Paddle Switch - w/Battery and Charger


Color: Grey/Black


Brand Name: FLEX


Model Number: FX3171A-1C


Global Trade Identification Number: 90


Manufacturer: FLEX


Unit Count: 1 Count


UPC: 840163200196


Number of Items: 1


Number of Packs: 1


Included Components: Battery, Battery Charger


Item Type Name: DISC_GRINDER_TOOL


Manufacturer Part Number: FX3171A-1C


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 24 – Oct 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Flex is the way!
Style: Paddle Switch - w/Battery and Charger
⭐️⭐️⭐️⭐️⭐️ Absolute Beast of a Grinder! This Flex grinder is an absolute beast—just like every other Flex tool I’ve bought. It cuts and grinds with power and precision, and the battery life is excellent. What really sets it apart is that it doesn’t auto shut down at the slightest bind like some other brands I’ve used. I appreciate that it comes with a wrench too—even though I usually tighten and loosen by hand, it’s great to have for those extra snug moments. Hands down, this is the best grinder I’ve ever used—better than Milwaukee, Makita, or Ridgid in my experience. I highly recommend this one and honestly, all Flex tools. They’ve earned my trust! ... show more
Reviewed in the United States on August 3, 2025 by Chad
    • Great grinder.
Style: Paddle Switch - w/Battery and Charger
This grinder is really nice. The handed is ok i wish it was threaded the other way around as i find myself gripping towards me which loosens the handle. The variable speed is sweet and really helpful when I need lower speed and it isnt super loud as my other grinder which is also brushless and battery powered. Overall great kit and won't disappoint. I don't abuse my tools so I can't say much on durability but I would say its a great value especially if you get it on sale during holidays. ... show more
Reviewed in the United States on August 26, 2026 by Juan O.
    • Power and durability
Style: Paddle Switch - w/Battery and Charger
Oh my grinder and it works really good and the pipe fitting trade
Reviewed in the United States on August 4, 2026 by Shipping take 14 days be careful before order
    • Amazing tool
Style: Paddle Switch - w/Battery and Charger
Flex got this angle grinder, it’s king. Built strong, packs serious power, and handles everything like a beast. Honestly, straight up better than DeWalt or Milwaukee in every way
Reviewed in the United States on February 13, 2026 by Sam
    • Grinder I just met her last week
Style: Paddle Switch - w/Battery and Charger
Love the grinder they work amazing. I’ve used the nuts out of it. I’ll first learned about it. At Fabtech great little grinder. It can hold up to 5 inch disc, which is really nice.
Reviewed in the United States on January 11, 2026 by William minnick
    • Great Performance and Comfort — Just One Small Flaw
Style: Paddle Switch - w/Battery and Charger
Review Image by Ann
Review Image by Ann
Review Image by Ann
I love this angle grinder! The variable speed control is a game changer — it's incredibly useful when switching between cutting, grinding, or polishing different materials. This was my first time using a paddle switch, and now I’m not sure I can go back to a slide switch. It’s much more comfortable and intuitive to use. The only downside is that there’s no onboard storage for the wrench — that, or some kind of tool-less system, would’ve been a nice touch. But overall, this is a high-quality, well-designed tool that’s a pleasure to use. ... show more
Reviewed in the United States on August 1, 2025 by Ann
    • Flex angle grinder best
Style: Paddle Switch - w/Battery and Charger
It’s a great tool
Reviewed in the United States on June 9, 2025 by Amazon Customer
    • 👍👍👍👍
Style: Paddle Switch - w/Battery and Charger
👍👍👍👍👍
Reviewed in the United States on August 11, 2026 by 🥰🥰🥰🥰

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