Conquer Tight Spaces: Ultra-thin flathead gear housing reduces head thickness by 30-40%, letting you reach narrow gaps and corners with ease—Yes. You Can. cut bolts flush and grind in spots others can't touch.
Power Through Any Job: High-performance brushless motor delivers 30% more efficiency with less heat and noise, providing consistent high torque from start to finish—no more stalling under pressure.
Work With Total Confidence: Gyro Safety Stop: The built-in gyroscope sensor continuously monitors tool orientation and detects abnormal motion or free fall, cutting power within milliseconds. This transforms safety from passive hope to active protection—if the tool falls, it stops before hitting the ground, preventing injury to you, damage to your workpiece, and costly tool replacement. It's like having a guardian angel watching over every cut, giving you true peace of mind even when working on ladders or in awkward positions.
Unlock Your Versatility: With 6 electronic speed settings ranging from 3,000 to 12,000 RPM, you can seamlessly switch from delicate surface polishing to aggressive metal cutting. Unlike basic single-speed grinders, our electronic speed control maintains constant power output at your chosen speed—even under heavy load, it won't bog down. Dial in the perfect RPM for metal, stone, tile, wood, or plastic, and trust that the tool will deliver consistent performance throughout the task. Low speeds for precision work, high speeds for rapid material removal—all in one compact package.
21V 5.0Ah High-Discharge Battery: Our high-capacity 21V lithium-ion battery delivers 5.0Ah of runtime with a 10C high-discharge rate, ensuring you have full power exactly when you need it. Extended runtime means fewer charging breaks—work longer, create more. The high-discharge design eliminates the "enough battery but not enough muscle" frustration of early cordless tools. Whether you're cutting rebar all afternoon or grinding welds on a big fabrication project, this battery keeps up with you. Plus, the included fast charger gets you back to work in approximately 2.5 hours.
Never Skip a Beat: Auto-Reset Overload Protection. Our intelligent electronic protection system continuously monitors motor load and temperature. If the tool stalls due to excessive pressure or a jammed wheel, it automatically shuts down to prevent damage. But here's the magic: once the abnormal condition is cleared, the system auto-resets. No more fumbling to unplug and replug the battery, no wasted time troubleshooting. Simply release the trigger, wait a moment, and squeeze again—you're back to work instantly. This seamless recovery keeps you focused on your project, not on your tool.
Stay Safe Instantly: Tool-Free 360° Adjustable Guard. Our click-lock mechanism allows one-handed, continuous 360° rotation—no tools required, no preset positions to settle for. Whether you're grinding overhead, sideways, or flat against a surface, simply lift the dial, rotate the guard to the exact angle that best deflects sparks away from you and your workpiece, and release. It clicks securely into place with millimeter precision. No more wrench-fumbling, no more "close enough" from limited preset angles. Your safety, positioned exactly your way, in seconds.
Ergonomic Anti-Vibration Design: Our engineers prioritized your comfort. Advanced vibration-dampening technology is integrated throughout the tool, significantly reducing the vibration transmitted to your hands and arms. The detachable side handle is ergonomically shaped and rubber-overmolded for a secure, comfortable grip, and can be mounted on either side for left or right-handed users. Combined with the tool's balanced weight distribution (just 1.8kg without battery), you can work longer with less fatigue—whether you're in the workshop all day or tackling a weekend restoration project.
Complete Kit Included: This comprehensive kit arrives in a premium color box with everything required to begin your next project immediately: 1x SEESII flathead brushless angle grinder, 1x 21V 5.0Ah high-capacity battery, 1x fast charger, 5x high-quality cutting wheels, 2x flap discs for grinding and finishing, and 1x anti-vibration side handle. Just open the box, charge the battery (or use it if partially charged), mount your wheel, and you're ready to say "Yes. I Can." to cutting, grinding, polishing, or rust removal.
Backed For The Long Haul: 3-Year Worry-Free Warranty: Every SEESII grinder is backed by a comprehensive 3-year warranty against material and workmanship defects. But more than that, you get dedicated US-based customer support ready to help with questions, troubleshooting, or advice.
1LOW PROFILE2FLICK & GO3SHOCK GRIP4EASY THROW55” READY1BRUSHLESS25.0 Ah36-SPEED4FLOW5Quick Guide1POWER CUTS2TILE CUTS3ANGLED ACCESS4FINISH5VERSATILE MotorBrushless, 21VBattery5.0Ah Li-ion (105 Wh)Speed Range4,000 – 12,000 RPM (6 speeds)Wheel Size4-1/2" to 5" (7/8" arbor)Brake<2 sec electronicDrop ProtectionGyro sensor / auto stopGuardTool-free, 360° adjustableWeight (tool only)1.8 kg (4.0 lbs)Battery Cycle Life≥ 1000 cyclesSide HandleAnti-vibration / Reversible for left/right handRecommended ApplicationsCutting, Grinding, Polishing, Rust Removal, Auto Body Repair, Metal Fabrication, Tile CuttingCompatible MaterialsMetal, Steel, Stainless Steel, Aluminum, Tile, Stone, Concrete, Wood, PlasticTarget AudienceDIY Enthusiasts, Homeowners, Auto Body Technicians, Mechanics, Welders, Metal Fabricators, Remodelers, Hobbyists, Professional TradespeopleIdeal ForAutomotive Workshops, Home Garages, Construction Sites, Metal Shops, Restoration Projects, HVAC Installation, Plumbing, Deck Building, Fence Repair, DIY WorkbenchesUser Skill LevelBeginner to Advanced

Is this angle grinder compatible with both 4-1/2" and 5" wheels?

Yes, it accepts both 4-1/2-inch and 5-inch wheels with a standard 7/8-inch arbor. This gives you the flexibility to use wheels you already own or choose the perfect size for each specific task, from cutting and grinding to polishing and rust removal.

What safety features does this grinder have?

Your safety is our priority. This grinder features intelligent gyroscope drop protection that detects free fall and activates the electronic brake within 20 milliseconds—instantly stopping the wheel to prevent injury or damage.

How long does the battery last on a full charge?

The included 21V 5.0Ah lithium-ion battery delivers extended runtime for most grinding and cutting tasks. Actual runtime depends on the load and speed setting,The fast charger replenishes the battery in approximately 2.5 hours.

What makes the "flathead" design special?

The flathead gear housing is ultra-compact, allowing you to reach tight spaces and corners where standard angle grinders cannot fit. This design enables true flush cutting—cutting bolts perfectly flush against surfaces.

Can I use this grinder for polishing and sanding?

Absolutely. With 6 variable speed settings from 4,000 to 12,000 RPM, you can dial in the perfect speed for polishing, sanding, and surface preparation.

SEESII 21V Flathead Brushless Angle Grinder

Meet the SEESII Flathead Brushless Angle Grinder — a complete cordless kit

SEESII Flathead Grinder - Complete Kit Overview

Specs & Applications

Is this angle grinder compatible with both 4-1/2" and 5" wheels?

What safety features does this grinder have?

How long does the battery last on a full charge?

What makes the "flathead" design special?

Can I use this grinder for polishing and sanding?