Zebra Tect Mechanical Pencil Two-Way 0.5mm Black, 10-pack, B-MA41-BK

[Features] Shake-to-advance lead release function / ON: Shake to advance lead / OFF: Low center of gravity for stable writing [Drafting Pen Nib] Long, extra-fine tip pipe for a wide field of view and good visibility of what you're doing. [Specifications] Upper barrel: Resin, painted finish / Lower barrel: Brass, plated finish / With silicone ring grip [Size] Overall length 149 x maximum shaft diameter 10.5 mm / Weight 23.6 g [Quantity] 10 pieces [Main body size] Total length 149.0mm/piece