Normalized tube record

0.488 in OD tube

A measured tube group centered on 0.488-inch outside diameter. It is separated from nominal drill-size classes until a verified equivalence is recorded.

0.488 in OD

Observed outside diameters0.488" (12.4 mm)

Known kit lengths1

Linked kits / projects6

Replacement listings0

Before substituting

Match OD, wall thickness, and length.

The class name helps discovery; it does not override the kit maker's current tube specification. A close drill size does not prove that two brass tubes are interchangeable.

Kit cross-reference

Known barrel lengths

Celtic knot FP pen kitsXiamen Rizheng · RZ-FP448Upper / capbarrel position0.488" (12.4 mm)tube OD1.874" (47.6 mm)tube lengthNot recordedminimum blank cutOpen kit →Celtic knot RB pen kitsXiamen Rizheng · RZ-RP448Upper / capbarrel position0.488" (12.4 mm)tube OD1.874" (47.6 mm)tube lengthNot recordedminimum blank cutOpen kit →Retro fountain pen kitsXiamen Rizheng · RZ-FP234Upper / capbarrel position0.488" (12.4 mm)tube OD1.874" (47.6 mm)tube lengthNot recordedminimum blank cutOpen kit →Retro fountain pen kitsXiamen Rizheng · RZ-FP234NUpper / capbarrel position0.488" (12.4 mm)tube OD1.874" (47.6 mm)tube lengthNot recordedminimum blank cutOpen kit →Retro rollerball pen kitsXiamen Rizheng · RZ-RP234Upper / capbarrel position0.488" (12.4 mm)tube OD1.874" (47.6 mm)tube lengthNot recordedminimum blank cutOpen kit →Retro rollerball pen kits new -Xiamen Rizheng · RZ-RP234NUpper / capbarrel position0.488" (12.4 mm)tube OD1.874" (47.6 mm)tube lengthNot recordedminimum blank cutOpen kit →