Uni-ball SXR-80-07 4-Color Ballpoint Refills 0.7mm 12 Pack

4-Color 0.7 mm Ballpoint Refills

This 12-pack supplies black, blue, red and green fine-point refills for the Uni Jetstream multi-function pen model MSXE510007. Each refill uses the SXR-80-07 format and delivers a 0.7 mm line. The set suits students and professionals who colour-code notes with a single pen body.

Check your pen model first

Verify that your current pen is the Uni Jetstream multi-function pen or 4-color ballpoint pen carrying the MSXE510007 designation. The SXR-80-07 refills are sized specifically for that body and will not fit standard single-colour pens or other brands. The pack measures 5.51 by 4.72 by 0.31 inches and weighs 0.04 pounds.

Replaces depleted Jetstream cartridges

When the original black, blue, red or green cartridges run dry, this value set restores all four colours at once. The jump is worth it if you write daily and want a single bulk purchase instead of hunting individual refills. It does not suit users who only need one colour or who prefer a different tip size.