Cheapest per head, and no diameter published
nqnqvl H4-HAZ0064-20
Twenty diamond-coated replacement heads for $14.88 — 74 cents each, the lowest on this shelf. No diameter, no grit and no machine named.
What you are getting
Twenty diamond-coated replacement heads for $14.88, which is 74 cents a head — the lowest price per head on this shelf by a wide margin.
The cheapest head here, and the arithmetic that says so
Four packs, four prices, and the only figure that compares them is the price per head:
- nqnqvl, 20 heads, $14.88 — 74 cents
- hiSpkNix, 10 heads, $9.98 — $1.00
- LUCKY TAIL, 3 heads, $23.99 — $8.00
- LUCKY TAIL, 2 heads, $19.95 — $9.98
Thirteen times the spread, for a job all four describe in the same words.
Its twin on this shelf
hiSpkNix publishes the same five bullets, word for word, down to “Quick-Change 10-Pack Design” against this listing’s “Quick-Change 20-Pack Design”. The references run in sequence — H4-HAZ0064-20 here, H2-HAZ0064-10 there — and the barcodes share their first eight digits: 0766717975955 and 0766717973944.
Two brand names, one catalog. Buying both to compare them would be buying the same head twice.
The one measurement that is missing
No head diameter is published. The listing carries a dimension — 25 × 25 × 25 mm — but a cube of 25 mm is the box, not the head. Diameter is the figure that decides whether a head seats in a given grinder, and it is the figure this shelf exists to compare.
“Compatible with most pet nail trimmers for dogs, cats, and small animals” names no machine. The Casfuy heads already on this shelf list five models they fit and one they do not; this lists none either way.
What it does publish
Diamond-coated grinding surface, a quick-change fit, and a stated larger grinding edge. No grit number, no grade, no life expectancy.
Availability
Read on the day this page was built: $15 at the American Amazon shop.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
Prices quoted in this text were read on 2026-10-06. The live price is at the top of the page.
The questions owners ask
Will these fit my grinder?
The listing does not say. It states "compatible with most pet nail trimmers for dogs, cats, and small animals" and names no model. The only dimension published is 25 × 25 × 25 mm (0.98 × 0.98 × 0.98 in), which is the package. A head seats on a shaft, and the diameter of that head is what decides the fit — it is not given here, nor on the hiSpkNix pack. The Casfuy heads elsewhere on this shelf do name five compatible grinders and one incompatible one, which is what a fitment claim looks like when it is checkable.
Is this the same product as the hiSpkNix pack?
The two pages cannot be told apart on their text. The five bullets are identical word for word, the references run in sequence — H4-HAZ0064-20 here and H2-HAZ0064-10 there — and the barcodes share their first eight digits, 0766717975955 and 0766717973944. The difference that is documented is the count: twenty heads here at 74 cents each, ten there at a dollar each.
How often should a head be changed?
The listing does not say, and no listing on this shelf does. What the shelf guidance says is to change it when the job starts taking longer, not when it looks worn: a glazed abrasive stops cutting and puts heat into the nail instead, and heat is what makes an animal refuse the grinder the next time.
