Post Mix Concrete.
Post Mix Concrete bags are fully waterproof.
Suitable for securing all types of wooden, metal and concrete posts.
The mix is kiln dried, pre blended,factory produced quick setting concrete.
Which hardens in approximately 10 minutes after water addition, depending on ambient conditions.
Recommended number of bags can vary depending on hole size.
For a hole 300mm x 450mm for a 100mm x 100mm post
2 bags would be required.
Weight of each is 20kg per bags