The quality is good, no plastic waste, but solid metal (feels at least as to). Limitations with the connection I could not find so far. For me it was not obvious that is imported directly from China, so the shipping took 1.5 weeks. I have seen in the display "in stock", so I was expecting the receipt after 3 days. So I recommend the seller to make this apparent to avert any trouble and discomfort (like my eg). :-) 4 stars - 1 star deducted due to shipping.