Changelog

22.05.2026: Release 4.0

01.06.2026: Update 4.1

• Now works with 50 and 60 x 1.4 x 1.4 mm and US type 32 and 33 rubber bands
• Better back and insert that is easiert to push in and remove. Can now accomodate different sized rubber bands
• increased front hole diameter for the pen rubber band
• Ergonomic cut out for easier pen removal
• New images added and description changed to display the updated assembly