Drill America - D/ARSD21/32 21/32" Reduced Shank High Speed...
Good for: Shoppers who want a reliable, well-reviewed product
Watch out for: suspicious-timing
Last analyzed: March 2026
Total Reviews
109
On Amazon
Verified
100%
Good
Amazon Rating
4.3
Original rating
Savinoo Rating
4.1
Adjusted rating
Our Recommendation
PROCEED WITH AWARENESS - Reviews appear mostly genuine, but consider the noted concerns.
Analysis Summary
- LOW RISK (Score: 100/100) Drill America - D/ARSD21/32 21/32" Reduced Shank High Speed...'s reviews appear mostly authentic. Additional Concerns: Review dates show suspicious clustering patterns, which may indicate coordinated fake reviews. Low author diversity detected - some reviewers may have written multiple reviews. Positive Indicators: 100% of reviews are from verified purchases, which is good. The rating pattern looks natural and balanced..
Customer Reviews from Amazon
Most Helpful Review
"Used this drill bit for enlarging holes in mild steel. Cuts through like buttah! Drilled at least 20 holes with this using cutting oil. Drill stayed just as sharp on the first hole as it did on the last. Purchased two sizes each the same quality."
tim
Used this drill bit for enlarging holes in mild steel. Cuts through like buttah! Drilled…
Used this drill bit for enlarging holes in mild steel. Cuts through like buttah! Drilled at least 20 holes with this using cutting oil. Drill stayed just as sharp on the first hole as it did on the last. Purchased two sizes each the same quality.sean h
Worked good for what I neededUsed to open up a 3/8 pipe port to tap…
Worked good for what I neededUsed to open up a 3/8 pipe port to tap for 1/2 pipeanthony m helinski
I am sure there are much better quality and professional bits out there. But for…
I am sure there are much better quality and professional bits out there. But for the price, this one can't be beat. How often do you have to drill a 55/64" hole? If the answer is more than 12, maybe you should find a better option. For me, the three holes I needed this bit for came out nice and crisp. A little wobble from the extra large bit, but if you make sure your work is clamped down on the drill press firmly that can be eliminated. The bit itself, is made of quality steel and the flutes are sharp. I especially like how the edges are milled with a different type of metal, it made the three holes I had to drill come out nice. I cannot speak for the longevity of the product past that but, after three holes it was still sharp.robert w
My bits arrived the next day as promised, the price wasn`t to bad, and they…
My bits arrived the next day as promised, the price wasn`t to bad, and they work fine.bemster
Purchased in 12/23 but project was put on hold. Finally got to use this drill…
Purchased in 12/23 but project was put on hold. Finally got to use this drill bit on 4/20/24. Got half thru hole in steel using a lathe then the the bit twist off. I use Drill America bits, .75" and 1" diameter, to slowly enlarge the hole. Then used this 1 1/2" diameter drill. I would think the lathe would fault out/over current before a harden bit twisted apart. Looked for warranty - only 90 days. I have a number of Drill America bits and have had good success. Maybe this one was a dud. Does not look harden to me. I have to reconsider future Drill America purchases in the future. This was my one and only use of a brand new bit.larry walters
worked well
What Customers Talk About
Commonly Praised
Commonly Complained
Review Quality Analysis
Review quality helps identify authentic customer feedback. Longer, detailed reviews (50+ words) typically indicate genuine experiences, while high percentages of short reviews (under 20 words) may suggest incentivized or fake feedback.
Average Words
55
✓ Detailed reviews
Long Reviews
25%
Average detail
Short Reviews
13%
✓ Low brief reviews
Review Length Distribution
Authentic vs Brief Reviews
Average Word Count Gauge
Benchmark: 30 words = moderate, 50+ words = detailed & authentic
55
avg. words per review
Interpretation: Review quality appears within normal range for this product category.
Review Velocity
Review velocity tracks how quickly reviews are posted. Steady, gradual accumulation is natural, while sudden spikes or bursts (20+ reviews in a single day) may indicate incentivized campaigns or coordinated activity.
Average Per Day
0.01
Natural pace
Max in One Day
10
Normal range
Steady Velocity Detected
Reviews posted at a consistent, natural pace over time — typical of organic customer feedback.
Rating Breakdown
This chart shows how customers rated Drill America - D/ARSD21/32 21/32" Reduced Shank High Speed.... Products with authentic reviews typically show a bell curve with most ratings in the 3–4 star range. A heavily polarized distribution — many 5★ and 1★ with few middle ratings — can be worth investigating further.
Key Findings
Review dates show suspicious clustering patterns, which may indicate coordinated fake reviews.
Low author diversity detected - some reviewers may have written multiple reviews.
These findings suggest this is a trustworthy product.
Looks legit — check on AmazonWarning Flags
suspicious-timing
low-author-diversity
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Our analysis is based on 109 reviews.
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This product scores 100/100 — better than most products we've analyzed. A strong trust signal.
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