Review on Dura Block AF44HL Black 7 Piece Sanding Kit for Precise and Efficient Sanding by Brandon Vox

The glue holding the velcro strap sucks. I literally used these blocks once and the velcro came loose with sandpaper. Also, they sanded down the lines in the primer due to Velcro breaks. I understand they can't make a continuous piece of velcro because the blocks bend. I think if you were using them for body work instead of finishing work the lines would be fine. I have heard that the new 3m yellow velcro blocks use a much stronger adhesive for their velcro but they are twice the price of these.