Philips Shaver SH71/51, a set of 3, compatible with 5000/7000 series. - Model Name: Philips SH71/51 - Quantity: Set of 3 - Compatible Models: Philips 5000/7000 series I mistakenly bought the 54-blade version when I wanted the 72-blade version. I installed it once and used it for about 2 minutes, so it's considered used. I washed it with water, dried it, and stored it in the case. I think it's in good condition, but please refrain from purchasing if you are looking for a perfect item. I don't know if it's genuine or aftermarket. The item is in decent condition, but please understand that it has been used and handled by a person. Please forgive any oversights or omissions. There are no warranties, claims, cancellations, returns, or refunds for used replacement blades. Thank you for your understanding.