The newest pen from Noodler's: The Triple Tail features a new body resin which is a cotton butyrate mix. It has a body that is more clear than other clear Noodler's models. The Triple Tail also features a new three-tined flex steel nib which is smooth and lays down a generous amount of ink with nice line variation.
To fill the pen, submerge the nib and feed into your ink bottle, then push and pull the filler rod two full strokes.
It also accepts the Noodler's 308 refillable cartridges.
When writing with a flex pen, apply slight pressure on the downstroke, which will spread the tines and increase the line width. Make sure to go slowly so that the ink can keep up with your writing.