I have used 2 pairs successfully for years commercially. This pair I bought for my 2 dogs in my retirement. They didn't seem right, but I am very please with the company as they sent me a replacements pair straight out, no questions with a pre paid sticker to return the other pair. As I am not working anymore that was very kind and would recommend these time and again. The clippers are amazing and very light to handle with a below average width for your hand to hold and not heavy either. I tried battery ones to make life easier as you get old but the batteries didn't hold up,so back to old faithful Master clip, for the last 25 y they have never let me down. I would highly recommend them good price too, with the right blade will Clip any dog. I gave a set of my older ones used commercially to my sister to try on her new dog, before buying her own, 3 y ago but she is still using them. A Very happy Sue