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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22
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Description
18-Volt ONE+ Cordless 4-1/2 in. Angle Grinder (Tool-Only)RYOBI introduces the 18 Volt ONE+ Cordless 4 1 2 in. Angle Grinder (Tool Only). The ONE+ 4 1 2 in. Angle Grinder offers cordless convenience and the power of 6500 RPM for fast and precise work. This tool offers a host of user friendly features, such as onboard wrench storage, the comfortable GRIPZONE overmold, and a 3 position side handle to help reduce fatigue. It also has an intuitive trigger switch. Best of all, it is part of the RYOBI ONE+ System
RYOBI introduces the 18-Volt ONE+ Cordless 4-1/2 in. Angle Grinder (Tool-Only). The ONE+ 4-1/2 in. Angle Grinder offers cordless convenience and the power of 6500 RPM for fast and precise work. This tool offers a host of user-friendly features, such as onboard wrench storage, the comfortable GRIPZONE overmold, and a 3-position side handle to help reduce fatigue. It also has an intuitive trigger switch. Best of all, it is part of the RYOBI ONE+ System of over 175 Cordless Tools that all work on the same battery platform. Backed by the RYOBI 3-Year Manufacturer's Warranty, the 18-Volt ONE+ 4-1/2 in. Angle Grinder includes a side handle, a Type 27 grinding guard, a grinding wheel, a spanner wrench, and an operator's manual. Battery and charger sold separately.- California residents
- 18-Volt for high-power applications
- 6500 RPM for precision at high speeds
- 4-1/2 in. grinding wheel for added value and convenience
- Onboard spanner wrench conveniently located in the side handle for easy access
- Tool-free guard for easy guard positioning
- Compatible with all RYOBI 18-Volt ONE+ Batteries
- 3-position side handle
- GRIPZONE overmold for improved comfort with a positive grip
- Part of the RYOBI ONE+ System of over 175 Cordless Tools
- 3-year manufacturer's warranty
- Includes: (1) P421 18-Volt ONE+ 4-1/2 in. Angle Grinder, (1) side handle, (1) Type 27 grinding guard, (1) grinding wheel, (1) spanner wrench, and operator's manual
- Battery and charger sold separately
- *Stem Pack Style Battery
Features
| Item Weight | 6.18 |
| Power Tool Features | Adjustable Handle Position,Grinding Wheel Included,No Additional Features,No Tool Wheel Change,Spindle Lock |
| Arbor Size | 5/8 x 11 UNC |
| Battery Power Type | Lithium Ion |
| Batteries Included | No |
| Electronic Speed Control | Yes |
| Battery Size | Lithium Ion |
| Cordless Tool Type | Angle Grinder |
| Color Family | Green |
| Amperage (amps) | 0 |
| Condition | New |
| Product Weight (lb.) | 6.18 |
| Battery Amp Hours | 0.0 |
| Returnable | 180-Day |
| Cordless/ Corded | Cordless |
| Variable Speed | No |
| Battery/Charger | Tool Only |
| Maximum Speed (rpm) | 6500 |
| Charger Included | Charger Not Included |
| Tools Product Type | Power Tool |
| Grinder Switch Type | Trigger |
| Battery/Charger2 | Tool Only |
| Number of Batteries Included | 0 |
| Number of Batteries Included2 | 0 |
| Voltage (volts) | 18 |
| Motor Type | Brushed |
| Product Width (in.) | 5.669 |
| Product Depth (in.) | 13.701 |
| Product Height (in.) | 5.443 |
| Wheel Diameter (in.) | 4.5 in |
| Certifications and Listings | UL Listed |
| Manufacturer Warranty | 3 Year Limited Warranty |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
Stay cool
Just what I needed, super fast shipping
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 19, 2025
★★★★★ 5
Outboard is Cooling
The repair kit arrived on time as scheduled. The kit contained everything needed to replace the Mercury 175 OptiMax impeller. The engine is cooling now and we are back on the water without issue. Easy replacement.
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Reviewed in the United States on July 5, 2023
★★★★★ 5
Flexible PVC Cable
Size: 2 Gauge 10FT
If you like the slick, shiny surface of PVC but want the flexibility of welding cable, this is a pretty good option. Easy to shape and makes solid crimps. One of my favorites.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Good quality for a good price!
Size: 6 Gauge 15FT, Size: 6 Gauge 15FT
Good value for the quality of these copper cables. Cut them to the length I needed and put a copper eyelet on one end. Wire size works good between my Victron solar charge controller and the batteries. Wire gauge will be able to handle the wattage much better than what I was using. They look much more professional than the old cables I was using also!
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Reviewed in the United States on December 15, 2025
★★★★★ 5
Be safe and always calculate the gauge wire are you need, don’t cut corners.
Size: 4 Gauge 10FT
Good quality solid copper 4 Gauge wires in red and black. Avoid aluminum wiring that has copper plating so looks like solid copper but can be dangerous if used in heavy load applications. Copper is expensive but required if amperage is high.
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Reviewed in the United States on February 8, 2026