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This model is an evolution of the PRO-USE series, which has been well-received as a drafting mechanical pencil, with a new function, the "Snork System." Drafting mechanical pencils are characterized by their specialization in drawing lines, with a low center of gravity design that makes the pen tip easy to see and allows for stable drawing of lines, and a non-slip grip that gives a "firm" writing experience. The "Snork System" is a new function that combines the writing experience unique to drafting mechanical pencils with the resistance to lead breakage. This has the function of changing the length of the lead pipe by rotating the taper (ferrule) at the tip to match the thickness of the ruler or adjust the distance from the paper to obtain a writing feel that suits you, and the function of switching on and off the cushion (safety slide function) that makes the lead less likely to break by holding the gripper and rotating the body. Size Length: 145.2mm Thickness: 10mm Weight: 23.1g Mechanism Knock type Material Barrel: ABS resin Clip: chrome plated iron Taper: chrome plated brass Gripper: chrome plated brass Accessories Presentation box, warranty card, initial core 0.7mm