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Three replacement sharpeners for the Derwent Twin Hole Battery Operated Sharpener. Contains two small sharpeners, suitable for 6-8mm diameter pencils, and one large sharpener, suitable for 9-12mm pencils. The Derwent Twin Hole Battery Operated Sharpener has a compact size, ideal for taking out and about. The high-quality durable blades can withstand hours of sharpening. A broken tip remover ensures any blockages are dealt with quickly. The visible reservoir captures the pencil shavings and these can be disposed of with the easily removed cover.