Ecobust is an Expansive demolition grout for breaking all rock or concrete without the use of explosives or jack hammering! It's powerful, reliable, safe, eco-friendly and completely silent. Expansive controlled demolition agent is the fastest, most powerful and economical of its kind. It is made of a safe, non-toxic powdered mixture of natural minerals that when mixed with water and poured into pre-drilled holes, expands at an incredible force of 20,000 psi being able to break any strength of rock or concrete. Works on any strength granite, marble, limestone, reinforced concrete and all other rock and concrete. Helps reduce labor costs, increases productivity, saves time and is safe. Silent and controlled operation. Ideal solution when faced with environmental restraints, noise and vibration restrictions, dust restrictions. Ecobust Type 4, to be used in rock or concrete temperature of 18F to 40F (4 Types of Ecobust available, select correct Type). Each 11lb bag fills 9 lineal feet of 1.5 inch diameter hole. 3 easy step process; just drill, mix and pour. To ensure success, read User Guide and watch instruction video. 24 hours for best results (48 hrs if cold climate) - Ensure safety goggles, rubber gloves and dust mask is used, follow User and Safety Guide.