I received this product and it looks like a quality product but that's where it ends. I bolted this to the arm, but before the nut was even tightened (not even with much force), the bolt snapped in half. I had the product less than 30 minutes before it broke. I'm waiting for news from Lokar about the block exchange. Until then I can only give this one star. UPDATE: I called Lokar and they sent me a new unit for free. This one works great. I don't know if I originally received the unit from a bad batch but the new one works great so I'm happy. The delivery of the new device took about a week.