This Linc branded fountain pen uses a piston for ink refill. Rotating the butt end of the barrel pushes and pulls the piston. When the nib is dipped into a pot of ink and the piston pulled, it sucks in the ink. The length of the pen is about 13.5 cm and weighs about 20 grams. The body is fine plastic and takes a nice shine. There are a few chips on the electroplated parts. Nib is iridium point Germany, fine.