Dryzone System Fixing Plugs are designed for sealing holes drilled in bricks or mortar after using Dryzone® DPC cream or Dryrod® damp proofing rod installation. These plugs have fins to fill injection holes of 10-12mm, offering essential protection against the elements. They are quick and easy to use, providing an alternative to sand or cement for sealing injection holes. The plugs are dark grey to match similar brickwork and measure 25mm in length with fins for a secure fit.