I hesitated to buy this product given the negative comments on its durability and strength, but I decided to do a test with a relatively affordable model. At reception, I wanted to test the roll. First surprise, yellow parts were oddly tinted blue ... like my hands when I''ve had manipulated the object for several seconds. The pins were immediately detached from their homes ... and to top it off, an unbearable smell from the chemical roll. I never imagined anything like this. object throwing, useless or even dangerous.