These plugs are constructed of aluminum and rubber with a soft steel pipe in the center. This allows the grout plug to be drilled out. The VK Grout Plug can be adapted to drill rods by a left hand pipe thread which allows them to be removed after cementing. The built-in check valve seals pressure in the hole, which makes it ideal for grouting.

Components:
• Left or right hand pipe thread
• Wedges
• Rubber seal
• Aluminum tube
• Plastic check ball