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Clear Penetration

G028
in stock
£1.60 £3.99 -60%
A pencil penetrates a card and a transparent sheet but only the card is damaged.

A pencil penetrates a card and a transparent sheet but only the card is damaged.

Show a transparent window and give it a good tap with a pencil to show that it is solid, even pass it around for examination.

Place a card on the window and thrust the pencil straight through the card and window. However when you remove the pencil only the card has a hole in the middle and once again the undamaged window can be passed around for examination.

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