Luckily I bought the clamps for fastening boxes on the terrace, where you can smell musty problems to himself. As soon as you open the bag came to meet me an acrid, extremely strong rubber odor. After a short time was this unbearable smell of rubber in the entire room. When the tensioner so wants to buy for the car or the like indoors: Stay away! Otherwise, processing is ok. The rubber and metal hooks keep what they should. For the price perfectly fine.