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

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 1.75 inch
Height : 0.75 inch
Length : 4.75 inch

Item Weight: 0.8 ounce (View shipping rates and policies)
Shipping Weight: 0.96 ounce (View shipping rates and policies)

ASIN : B001DKFCYU