Alvin, Universal Compass Adapter, Versatile - 3.5mm & 4.0mm

Alvin, Universal Compass Adapter, Versatile - 3.5mm & 4.0mm

• VERSATILE - The Alvin Universal Compass Adapter provides additional functionality and maximum versatility for all Alvin compasses.
• 3.5 AND 4 MM SHAFTS - It includes 3.5-millimeter and 4-millimeter insert shafts.
• COMPATIBILITY - Compatible with all Alvin compasses.
• WIDE USES - By using this adapter, it allows any compass to accommodate a wide variety of drawing pens and pencils including technical fountain pens, mechanical pencils, nylon stick pens, and ballpoints.
• A PROFESSIONAL'S CHOICE - Alvin has been the professional's choice for drafting tools and drawing supplies for over half a century.

Adapter with 4mm and 3.5mm insert shafts. Can be used on all technical fountain pens, mechanical pencils, nylon stick pens, and ballpoints.