2 step, Fast Set Postcrete 20kg - just add water!
We'd recommend 1-2 bags of postcrete per post depending on ground type and size of post.
1. dig hole (approx 20cm wide, 60cm deep)
2. fill hole 1/3 full of water
3. pour in in postcrete
4. ensure post is straight and level
5. sets in 5-10 mins