PRODUCTS
Product
Writing implements
Large chuck
Purpose
This chuck is slightly larger than a regular zipper and can hold thicker leads such as chalk and crayons.
Explanation
Lead diameters are 1.4mm, 2mm, 3mm, 3.2mm, 5.6mm, and 9mm. Large chucks come in a standard type that dispenses a set amount of lead when knocked, as well as a type that allows the lead to fall under its own weight (holder-type chuck).
