$52.99 Pentel Graph 1000 for Pro Drafting Pen 0.5mm Mechanical Pencil Sharp PG1005 | eBay
2B 2.0 mm Blue Black Lead Holder Pen Mechanical Pencils Drafting Drawing Pencil for Sketching 
Isomars Technical Drawing Pen Techno art Set Of 8 Pcs (sizes: 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7 
