Review on Improved Stability and Balance: BL 123NH Pair Blocks Without Holes for Precise Clamping by Joseph Morris

Great concept. In my case the item was wrapped in a partially torn cloth soaked in oil (presumably to protect the surface from corrosion). The shipping and packaging was ridiculous: those heavy items were thrown into a padded envelope (with another item!). Upon arrival, the padded envelope was torn (and very dirty; UPS did not provide any assistance), the box was the product in was fried, and after cleaning the blocks I found that the product (one of the two blocks) was on 4 or 5 places was cut out. I sent it back. By the way, although the blocks are of good quality on the outside, they are quite heavy and probably won't stick to the magnetic mount. ; Non-solid blocks can be more useful.