The TWSBI ECO-T Fountain Pen provides the same high-quality, high-capacity piston filler as other TWSBI Fountain Pens at an affordable price. It features a sleek, transparent barrel and a rounded triangular screw-on cap that can be posted securely on the back of the pen. The piston filling mechanism is easily operated by twisting the knob at the end of the barrel counter-clockwise to extend the piston, submerging the nib in ink, then screwing the knob tight to retract the piston, drawing ink into the pen straight from the bottle. There is no need for cartridges or a converter.
The ECO-T differs from the ECO in that it has a triangular grip section, perfect for beginner writers learning proper grip, new writing enthusiasts and anyone who prefers a more structured grip, and a rounded triangular shaped cap and piston knob instead of hexagon.
TWSBI fountain pens can be entirely disassembled for the purposes of cleaning and servicing. Instructions and necessary tools are supplied with each TWSBI fountain pen but recommend this is only carried out by experienced fountain pen users. This should only be carried out as part of long term servicing of the pen; it will not need to be done straight away.