Definitely worth the money. I do plumbing for a living and it is very durable (metal) and also convenient as you can change blades. For €10 you can't complain at all. Very happy with the product.
Pros
WIDE APPLICATION. The deburring tool set includes 11 blades, ideal for cutting round hole edges, deep holes, straight edges, curved edges, slots. Suitable for both home use and professional industrial use, it is suitable for steel, copper, aluminum, plastic, PVC, tin, guttering and most trimming applications.