This nail grinder lives up to all the hype! It's lightweight, sleek and easy to use. It has 3 different choices of places to file and 2 speeds. It so much quieter than other grinders I have tried.
The light is handy too!!
I have a ShihTzu who absolutely Hates nail clippers so much, she would pull away and cause such a fuss that it made it next to impossible to trim her nails. Her nails had gotten so long that they were curved and tapping when she walks or runs and it was affecting her back.
As soon as I got it in the mail, I introduced it to her with special treats and as she got used to it, I was able to file one foot at a time, take a break and move to the next foot. I am starting off slow as to not trim too much off at once, but so far, in my opinion, this is the best grinder filer out there! ( I previously had the Dremel 7300-PGT, but it was heavier, bulkier, louder and seems like it is built for larger dogs)
I am so happy I found this! This makes it soooo easy for me to file her nails! Since her nails are black, it's hard to know where the quick is. I will continue to use it every week until her nails get to the ideal length.
She's already walking better.
It is a dream come true for me and my dog too!

Dogs are freaked out by the noise which is not surprising. So I used it on my nails and then my wife used it on hers and then I used to join my 1, , and 7-year-old kids

Our little mini dachshund has hulk-like strength when it comes to fighting us off when trying to trim her toenails. We bought this grinder hoping it would make the task a bit easier and more pleasant for her and us. The first day we got the grinder I simply placed it next to her as she sat with me on the sofa and tucked it under her blanket next to her when she was napping. She ignored it. The next day I turned it on and let her sniff it and inspect it with the safety cover over the grinding wheel. She was fascinated by the sound of it (it is very quiet! Much more quiet than I expected!) and a little afraid of it at first. After hearing it start up a few times she ignored it and let me use the base end of it to rub her belly so she could feel the slight vibration. She was rewarded with treats. On day three I began touching it to her feet and nails with the motor off at first until she was OK with it and rewarded her with treats after every successful touch. I finally turned it on and started touching the pads of her feet and her nails with the motor on so she could feel the slight vibration but I kept the safety cover over the grinder wheel so that she could learn that it wouldn't hurt her. She resisted and pouted with me as she does any time I touch her feet for any reason and retired to her bed to give me a hateful, side-eyed glare after each time I dared touch her feet with it. She eventually came around to reluctantly letting me touch her feet with it after receiving a treat each time she stayed put through the exercise. Day four was the real test. I went through the same process of touching her feet with the motor on and the safety cap on and rewarding her without actually grinding her nails a few times. When she seemed calm enough I removed the safety cover and touched the grinding wheel to the first nail. Instant freakout!! She jumped up and ran away to pout in her bed for a while. I didn't reward her for this behavior but instead remained on the sofa with the grinder at the ready and tempted her back over to me with treats. When she returned I went through the process again of giving small treat rewards with each step until I was able to make contact with her nail again. This time she let me do one nail before deciding that she'd had enough and squirmed from my lap. I continued tempting her back to me with treats and after 3 or 4 more times of letting me grind just a bit and wriggling away she finally relaxed and let me complete grinding all 8 front nails! She still wouldn't let me do the front dew claws. She was rewarded with lots of belly rubs and head scratches and more treats after that accomplishment and I left her alone to rest in her bed. She was still throwing bit of side-eye attitude so she definitely didn't enjoy the experience, but at least she let me do it without a fight and without any risk of hurting her by trying to restrain her too aggressively or cutting into the quick as could happen with traditional nail trimmers. Today I went through the slow acclimation process again with lots of treats until she let me do her dew claws and rear nails. She still wasn't happy about it, but it was a lot easier today than yesterday. The grinder is very quiet. My ultrasonic toothbrush makes more noise. It grinds the nails very smoothly but it is not a quick process. It takes off a very small amount at the time but that's a good thing as there is no danger you will grind down to the quick with a single touch to the nail. Follow the instructions and take off just a bit at the time in short, light touches to keep the friction from burning the nails. I am very pleased with this product.

I began to use it a few weeks ago, my dog is already used to the noise, and now I can grind her nails effortlessly, she hated trimming, would often bite when when using any clipper, but, doesn't mind the grinder at all. What a great product! It not only lowers the length of the nail, but, leaves them rounded, so they don't scratch at all!

I just recently received my Casfuy grinder and used it on Saturday on my 4 month old pups nails. I was amazed at how quiet the tool is, very low humming sound, I let my pup sniff it, turned it on near her to see how she might react to the sound and to my surprise she had no reaction at all! I started with just one nail just barely touching it for a few seconds then removing it, well surprisingly, that's all I needed to do to shorten her nail, just a little filing, briefly on the nail was enough to trim and smooth the nail. I had treats on hand which helped me to keep her still and she lay in my lap, munching her treats while I was able to trim all four paws in a fairly short amount of time. My plan is to trim them about every 4 weeks or so as doing so will keep them from getting too long and will take very little time to do.
I really like the little light on the tip, very helpful to illuminate the nail so you don't trim to close. I choose the dark blue color which is kind of a midnight blue, I also like the slim.design, fits easily and comfortably in my hand, its light weight and very easy to use and very affordable! I'm very satisfied with it and it works just as described in the ad and in the comments section as well. I would definitely recommend this Casfuy grinder to anyone, especially to those with small pups like my mini poodle.