4 mm fibreglass eraser with twist mechanism for removing the fibreglass brush and 12 additional replacement brushes in a practical set. The high quality fibreglass pen is ideal for exposing circuit boards, cleaning contacts, removing rust or oxidation residue, polishing, roughing and much more. Product Details Glass Fibre Eraser Set 4mm Glass fibre insert dimensions: 4 x 40 mm. - Length of fibreglass pen: 120 mm - Interchangeable fibreglass insert Instructions for the glass fibre used - The high quality glass fibres used are not identical to the commonly known fibreglass. - The raw material used is specially manufactured without CFCs. The glass fibres cannot be inhaled and are harmless to health. Box contents: 1 x fibreglass eraser with 4 mm tip. 12x replacement brushes in plastic storage box.
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