Advantage

Easy to handling core from inner tube.
->Device is a small and simple structure and also easy to setup. Prevent damage to the core.
->Gathering more exact ground formation and core recovery up.

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Cover core completely in the inner tube.
->Prevent core jamming by reducing friction between core & inner tube.

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Regardless of the strength of the layer, can be taken out the good condition of the core.
->Take the sedimentary structures (include sand) in a natural state. Store the core very nicely.

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Setting Instruction

As long as you will set up the elastic sleeve right way.
NEVER OVERLAP the elastic sleeve each other. It will cause the core jam.

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