I have a tiny dog breed. Since groomers are costly,I rather trim my dogs nail myself and save my funds. This trimmer works for big breeds and small breeds. Comes with a file, trimmer,and clippers. My dog wasn't scared she sat and let me cut her nails without moving. The trimmer did a nice job and didn't hurt my dog. I like how the trimmer fits perfectly into my hands and is light weight. Highly recommend