SPECIFICATIONS

Key Specifications

• Motor: Brushless
• Voltage: 21V
• Disc Size: 125 mm (5 in.) / 4½-inch compatible
• Maximum Speed: 10,000 RPM
• Speed Settings:
  • 5,000 RPM
  • 7,500 RPM
  • 10,000 RPM
• Battery: 2 × 4.0Ah lithium-ion batteries
• Handle: Reversible left/right auxiliary handle
• Included Accessories:
  • Cutting discs
  • Flap wheels
  • Wire wheel
  • Wrenches
  • Safety goggles
  • Gloves
  • Carry bag
  • Charger

Performance

Cutting ⭐⭐⭐⭐☆

The grinder performs well for:

• Steel tubing
• Rebar
• Sheet metal
• Bolts
• Tile (with the proper diamond blade)

The 10,000 RPM top speed is comparable to many cordless grinders in the 4½–5-inch class.

Grinding & Polishing ⭐⭐⭐⭐☆

Suitable for:

• Weld cleanup
• Rust removal
• Deburring
• Surface preparation
• Sharpening lawn equipment
• Light wood shaping with appropriate accessories

The variable speed settings are useful when switching between aggressive cutting and more controlled polishing.

Battery Life ⭐⭐⭐⭐☆

The included two 4.0Ah batteries allow you to alternate packs while charging, providing enough runtime for most DIY and weekend workshop projects. Heavy cutting of thick steel will naturally reduce runtime.

Strenghts 

• ✅ Brushless motor for improved efficiency and longer service life
• ✅ Dual 4.0Ah batteries included
• ✅ Three selectable speed settings
• ✅ Complete accessory kit
• ✅ Auxiliary handle for better control
• ✅ Excellent value for the price (around $50 at the time of listing)

1: 7pcs Replaceable Accessories

2: Professional Disc Grinder for Metal Grinding

3: Home Renovation

4: DIY Projects

Battery Capacity (mAh): 4000MAh

Battery Included: Yes

Battery Properties: Rechargeable Lithium Battery

Brand Name: taskstar

Electrified: Yes

Handheld: Yes

High-concerned chemical: None

Material: Stainless Steel

Movable: Yes

Operating Voltage: 110V

Power Supply: Battery Powered (with Plug)