Instruct: Classify the given review as either positive or negative.
Query: This product damages the Wahl brand name

My first clippers were Wahl brand and I loved them. When they finally died I tried to get a deal and switched to Oster brand. They were not nearly as good so I switched back to Wahl. This product damages their brand. I could not even get 1 complete haircut before the blades were putting 3 stripes in my hair. After 3-4 trims they were completely dull. I threw them away, shaved my head with a razor and wrote this review. Do not spend your hard earned money on this specific product.