The Derwent Battery Operated Eraser Refills 30 offer artists, sketchers, and architects a steady supply of replacement tips to maintain precise control over their highlights and detailed corrections. Each compact, sturdy white rubber refill is specially formulated to cleanly lift graphite and charcoal particles without scuffing or tearing delicate paper surfaces. Perfect for creating intricate patterns, highlights, or fine-line details, these tips fit securely inside your motorized eraser for effortless, long-term drawing sessions.