New website since October 2026. See what changed
Actual product may differ slightly from photos. See description.
Screw Eye Hook
Available in stock (994)
About this product
About this product
The Screw Eye Hook is a tool for modifying Canon CLI-42 and similar cartridges before refilling. Required for accessing the ink reservoir on cartridges with ball-sealed fill ports. Essential accessory for Canon Pro-100 (CLI-42) cartridge refilling.
Storage & Handling
Storage & Handling
Store inks tightly capped and upright, at room temperature, away from direct sunlight and heat. Properly stored, sealed bottles can last for years. Use a clean syringe for each color to avoid cross contamination, and wipe up any drips with a damp paper towel. Use a cleaner with ammonia (e.g. Windex) to clean tough drips or spills.
Accessories like resetters and clips need no special care beyond keeping them clean and dry.
Keep all inks and refill tools out of reach of children and pets. Not for any use other than printer refilling.
“I discovered Precision Colors early in my printing career, and they quickly proved to be the best I had tested. They’ve lived up to that reputation ever since.”





