How much material is in this? 20kg? i am looking to fix a heavy steel post which is about 1.5m long and must weigh 30kg. will one bag suffice?

you will need 2 bags for a good fixing,i put a 4 by 4 inch post in 2 foot deep and it filled the hole 12x12 around it bang on

How much water to add per post? Instruction suggest 2 litres, but it seems very little per 20kg bag

I used 2 litres to start then if I felt it was to dry I add a little more. But remember this stuff takes extra mousture from the serounding soil.

how many bags do i need for a child swing

personally for safety id use a bag per leg

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🚀 Set It and Forget It! Fast, Reliable, and Ready for Action!

DURABLE RELIABLE - Engineered for strength, ensuring your structures stand the test of time.
QUICK EASY SETUP - Set your posts in record time with this fast-setting concrete!
COMPACT CONVENIENT - Lightweight 20 kg package for easy handling and storage.
USER FRIENDLY DESIGN - No batteries needed—just mix, pour, and set!
PERFECT FOR OUTDOOR PROJECTS - Ideal for fences, gates, and garden lighting—bring your vision to life!

Hanson Fast Set Postfix is a high-performance concrete solution designed for quick and efficient installation of fence posts, gate posts, pergolas, and garden lighting. With a compact size of 37 x 27 x 10 cm and a manageable weight of 20 kg, this product is perfect for both DIY enthusiasts and professional contractors looking to streamline their outdoor projects.

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TT$2377

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Trinidad and Tobagostore

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TrustScore 4.5 | 7,300+ reviews

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Manufacturer	Hanson
Part Number	Hanson Fast Set PostFix
Product Dimensions	37 x 27 x 10 cm; 20 kg
Item model number	Hanson Fast Set PostFix
Item Package Quantity	1
Included Components	Hanson Fast Set PostFix
Batteries included?	No
Batteries Required?	No
Item Weight	20 kg

Hanson Fast Set Postfix

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