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Fineline Masking Fluid Pens and Sets

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Item #Item Name and DetailsMSRPNon-MemberMemberQuantity
Fineline Masking Fluid Pen - Super Nib 1oz
In Stock
Fineline Masking Fluid Pen 1oz
In Stock
Fineline Masking Fluid Refill 1oz
In Stock
Fineline Masking Fluid Super Set
In Stock

Fineline Masking Fluid Pens and Sets

Achieve detailed designs within your watercolor paintings with these Masking Fluid Pens!

Masking precise areas and detailed designs is a breeze with this redesigned Fineline Masking Fluid Pen-- There are no tools to clean up afterwards! Featuring a 1.25 oz. squeeze bottle filled with pale blue masking fluid, each Masking Fluid Pen has a non-clogging Cap/Wire system, where a wire prong in the cap itself prevents the fine metal nib from becoming blocked — so the fluid never dries and there's no waste.

  • Easy and clean application of masking fluid to watercolor paintings
  • Nib sizes available in 0.8mm or 0.4mm
  • Both nib sizes are crafted from durable and resilient stainless steel
  • Includes 1.25oz of easy to remove masking fluid
  • Includes a non-clogging cap/wire system
  • Masking fluid bottles are replaceable
  • To apply, gently squeeze the bottle to create thin or thick lines, small dots, designs or large areas
  • Prevents the damaging effects Masking Fluid can have on paintbrushes
  • Perfect for watercolorists, mixed-media artists, students, teachers, studios, businesses and classrooms!
  • Incredible low prices! - Perfect for bulk purchasing!
  • Fineline Masking Fluid Pen- This superb applicator bottle allows you to effortlessly apply a 0.8 mm line of masking fluid! Fluid won't stain your paper, lifts without marring surface, and is translucent when dry, which allows you to work over designs as well.
  • Fineline Super Nib Masking Fluid Pen - Features an ultra-fine, 0.4mm, all metal nib for getting the most precise lines and control, you can do anything! Fits over standard Fineline Masking Fluid bottle and is a breeze to use. Includes cleaning plunger, cotton swabs and cleaning bottle.
  • Fineline Super Set - Includes Fineline Masking Fluid Pen, Fineline Masking Fluid Refill and Fineline Super Nib.
  • Fineline Masking Fluid Refill - Continue enjoying the Fineline Masking Fluid nib and Supernib, by only replacing the Fineline Masking Fluid! Does not include nib. Includes 1oz of Masquepen fluid and bottle.
  • Shipping Rates

    All orders are charged actual shipping rates. Available shipping options for each order will be calculated during the checkout process based on package dimensions and destination. You will have the opportunity to review the shipping fees for your order before finalizing and submitting your order. For full shipping details and options see our shipping page at

    Oversized orders

    Certain items and large orders ship via LTL (less than truckload) with reduced ground rates inside the contiguous 48 states.

    Turnaround times

    Most orders leave our warehouse in 24-48 hours. Orders received before 9:30 AM EST on a weekday will most likely ship the same business day contingent upon warehouse volume. Our warehouse is located in Henderson, NC. Your estimated transit time will vary based on your proximity to our warehouse. Custom sectional frames are cut-to-order so please allow additional time for delivery.

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