Sharpeners who want a well-reviewed bench stone in the common 7.25 by 2.25 inch size and do not mind paying a little more than the SP_400.
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You want the highest rating or lowest price here, since it carries this group's lowest 4.5-star score and costs more than the Sharp SP_400.
Weight 1.8 Pounds
Dimensions 7.25"L x 2.25"W x 1"H
Pieces 1
Priced 63% above the category median ($22.03 across 47 tracked models)
Our scorecard
4.5/5overall
Owner rating4.5/5
4.5 average across 4,414 owner ratings
Popularity4.1/5
4,414 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other hand tools and workshop hand tools we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
The Sharp NM-BM4E-KZXF is a single sharpening stone priced at $35.99 with a 4.5-star rating from 4,414 reviews. That rating is the lowest in this group, though it is still well above the site's 3.8-star floor and rests on a large review base.
The listing gives a 1.8-pound weight and 7.25 by 2.25 by 1 inch dimensions, the same footprint as the cheaper Sharp SP_400, sold as a single piece. No grit is listed, so confirm the grade you need before buying.
At $35.99 it costs more than the SP_400 while carrying a lower rating and fewer reviews, so the SP_400 is the stronger value unless this model's grit or finish suits you better. ToolHandle is an Amazon Associate and earns from qualifying purchases, which does not influence our rankings.
Pros
4,414 reviews, a large sample
Standard 7.25 by 2.25 inch bench footprint is listed
1.8-pound weight is documented
Cons
4.5-star rating is the lowest in this group
Costs more than the higher-reviewed Sharp SP_400
No grit is listed
Specifications
Weight
1.8 Pounds
Dimensions
7.25"L x 2.25"W x 1"H
Pieces
1
Performance notes
The 7.25 by 2.25 by 1 inch size and 1.8-pound weight match a standard bench whetstone and the cheaper SP_400's footprint. With no grit published, verify the abrasive grade before relying on it for a specific sharpening stage.
What buyers say
Owners give it 4.5 stars across 4,414 reviews, this group's lowest rating but still solid, with about 100 sold per month. The large review count suggests the score is well-established rather than based on a thin sample.
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