Sharp Pebble Orange Ninja Electric Rolling Knife Sharpener
- 5 sharpening angles, 12 to 24 degrees
- 3-stage diamond and ceramic discs
- Magnetic angle lock, cordless battery power
- 4 AAA batteries included
- 7 x 1.26 x 2.05 inches, black and orange plastic
Last refreshed Sep 25, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact battery-powered rolling sharpener with five angle settings. Details on serrated blades and knife steel types are not given.
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ASIN: B0G42W4RC2Category: Knife Sharpeners
Overview
Sharpening kitchen and chef knives with diamond and ceramic discs, the Orange Ninja runs cordless on four AAA batteries. A magnetic angle lock holds the blade at one of five angle settings while the discs work through three stages.
Angle choice, cordless operation and included batteries make it easy to try without any other setup. The listing is silent on serrated knives, scissors and ceramic blades, and a grit field says coarse without describing the three stages.
Who it's for
Home cooks with a block of chef knives who want a quick tune-up without a whetstone will find the angle lock and discs convenient. Knife hobbyists wanting full control, or sharpening serrated blades, should look at other tools.
Pros and cons
- Five angle settings
- Cordless, batteries included
- Diamond and ceramic discs
- Magnetic angle lock
- Serrated blade support not listed
- Grit levels per stage unstated
Performance notes
A magnetic lock holds the knife against the chosen angle while the discs rotate against the edge, so the angle stays consistent along the blade. Diamond discs remove metal and ceramic discs refine, which is the logic behind the three stages. Battery power means no cord to manage.
Specifications
| Brand | Sharp Pebble |
|---|---|
| Dimensions & fit | |
| Item Dimensions L x W x H | 7"L x 1.26"W x 2.05"H |
| Power & efficiency | |
| Power source | Cordless, 4 AAA batteries included |
| Construction & materials | |
| Color | Black/orange |
| Material Type | Plastic |
| Other details | |
| Abrasive type | 3-stage diamond and ceramic |
| Sharpening angles | 5 settings, 12 to 24 degrees |
| Extras | Magnetic angle lock |
Frequently asked questions
Does the Orange Ninja sharpener work on serrated knives?
The listing says it is for kitchen and chef knives and does not mention serrated blades.
What knives are compatible with the Orange Ninja sharpener?
The title names kitchen and chef knives, with sharpening angles from 12 to 24 degrees.
Are batteries included with the Orange Ninja sharpener?
Yes. The title says 4 AAA are included, and it runs cordless.
Is the Orange Ninja a manual sharpener?
No. The listing calls it an electric rolling sharpener with battery power.