Oster Power Max Clippers - Brand: Oster - Model Name: Power Max - Power Source: Electric - Safety Standard: ETL Certified I've used these clippers quite a bit for home grooming of my two miniature schnauzers. I think they still have plenty of life left in them. I cleaned them as best I could, but there are many stains and scratches. I would appreciate it if you could understand. Thank you for looking.