Review on 🧱 Blocks Precision-Hardened 0.0002-303-5500N by Rashan Jimenez

The holes in these blocks are precision drilled unlike the blocks sold here by other vendors. The box it comes in is also different, so it must be from one of the best Chinese suppliers. With this construction of blocks it is very important that the holes are accurately drilled and tapped in order to assemble them at right angles and in larger versions for installation. The others I ordered had to be returned because if you can't assemble them and hold them accurately, they just weigh paper. Will buy again.