For 14.90 an unbeatable price, but at the first use of the weld seam of the clamping lever (mother) is broken and I had to handle in his hand. Actually I wanted to return the roller block again, but since I did not want to back and forth, and the part desperately needed, I welded a new mother to the Bock. Since then, the Bock works as it should. As described, for the price of the roller block is not bad, if you can help yourself. Otherwise rather spend a little more and buy quality.
