Cover Blocks Packet 100pcs.

Cover blocks are used in construction to provide a protective layer for reinforcement bars. They are typically made of concrete or plastic and are available in a variety of sizes and shapes.
The minimum size of cover block is typically 20 mm for columns and 15 mm for beams. However, the specific requirements may vary depending on the project. The cover block should be large enough to provide adequate protection for the reinforcement bars, but it should also be small enough to allow the concrete to flow freely around the bars.