Noodlers Blue Black Ink Cartridge Rollerbal Rollerball Pens combine the rolling

Rollerball Pens combine the rolling ball of a ball point pen with the waterbased inks used with fountain pens

Noodlers Ink is handmade and some variation from batch to batch should be expected

It is a bulletproof

and the yellow turned almost black with the dust

Noodlers ink is Handcrafted and may vary from batch to batch

Noodlers Blue Black Ink Cartridge Rollerbal Rollerball Pens combine the rollingNoodlers Blue Black Ink is a deep dark blue. It has some moderate shading ability. The blue black ink is partially bulletproof. It's not an archival ink and made fade over long term. It is water resistant and forgery resistant. Noodlers Ink is handcraft and may show some variation from batch to batch