# Casfuy N75 Smart 6-Speed Dog Nail Grinder, 7-Hour Battery

Source: https://www.ranked10.co.uk/pet-supplies/best-dog-nail-grinders/casfuy-n75-dog-nail-grinder
Ranked #3 in "Best Dog Nail Grinder 2026: 10 Ranked, Four Share One RPM Band": https://www.ranked10.co.uk/pet-supplies/best-dog-nail-grinders

- Price: £24.99 (checked on Amazon UK on 2026-09-16)
- Amazon rating: 4.4 from 1,201 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0FCFVCZK9?tag=ranked10-21

The Casfuy Smart 6-Speed Dog Nail Grinder is the N75, and it takes third place in our guide to dog nail grinders. At £24.99 it sits at the very top of the £21.24–£24.99 range that the Casfuy listings in that guide occupy, and it carries a 4.4 rating from 1,201 ratings. The headline numbers are a 6-speed motor running from 7,000 to 12,000 RPM, two LED lights aimed at the quick, and up to 7 hours of runtime from a 2,000 mAh battery.

The 7,000–12,000 RPM band is not this grinder's distinguishing feature: it is the same band three other Casfuy listings quote. The runtime is what separates it. Casfuy claims 7 hours here against 2 hours after a 3-hour charge on the £21.24 model in the same guide. The other claim in the bullets, "50% more power", arrives with no wattage attached anywhere in the spec table, so there is nothing in the listing for the 50% to be measured against. One more figure worth reading carefully: the five star bars run 69, 15, 8, 4 and 4, which adds to 100 rather than to the 1,201 ratings quoted above them, so those bars read as shares rather than counts. Everything on this page comes from the Amazon listing; we have not tested the grinder.

## Specification

| Field | Value |
|---|---|
| Price | £24.99 |
| Rating | 4.4 out of 5 from 1,201 ratings |
| Model number | N75 |
| Speeds | 6 speeds, 7,000–12,000 RPM |
| Battery | 2,000 mAh, up to 7 hours runtime claimed |
| Noise | About 40 dB, claimed 10% less noise |
| Power claim | 50% more power — no wattage given anywhere in the listing |
| Weight | 310 g item weight, 0.31 kg package weight (as listed) |

## Questions people ask

**How long does the Casfuy N75 run on one charge?**

The listing claims up to 7 hours from a 2,000 mAh battery, and says three LED indicators show the remaining charge at a glance.

**How many speeds does it have?**

Six, spanning 7,000 to 12,000 RPM. Casfuy advises starting at a low speed so the dog adjusts, then increasing.

**How loud is it?**

The listing quotes about 40 dB and describes that as 10% less noise. It does not say what the 10% is measured against or what the previous figure was.

**What does the 50% more power claim refer to?**

Nothing in the listing says. No wattage appears in the spec table, so there is no baseline against which the 50% can be checked.

**Does it come with a battery?**

Yes. The listing states that 1 lithium ion battery is required and included.

**Is this the same model as the other Casfuy grinders in the guide?**

No. This one gives its model number as N75, while two further Casfuy listings in the guide give LGL007.