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Amazon.com : ALVIN DM357C Draft-Matic Mechanical Pencil, 3 Pack, Stainless Steel Drawing and Design Tools, Great for Drafting, Architecture, Engineering, and Art - Includes 0.3mm, 0.5mm, and 0.7mm : Alvin Draft Matic
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Amazon.com : ALVIN DM05 Draft-Matic Mechanical Pencil, 0.5mm, Stainless Steel Drawing and Design Tool for Students and Professionals, Great for Drafting, Architecture, Engineering, and Art : Office Products
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