SparkFun Tube - Aluminum (3/8"OD x 10"L 0.30"ID) Tubing GPS & Navigation Shield is compatible with 5V

Shield is compatible with 5V or 3

This is a simple 5mm LED with an interesting array of applications

The cover has drawstring arm protectors

It also utilizes an extremely common parallel interface so code is freely available (check below for an Arduino example)

SparkFun Tube - Aluminum (3/8"OD x 10"L 0.30"ID) Tubing GPS & Navigation Shield is compatible with 5VThese 10" long aluminum tubes have an outer diameter of 3 8", an inner diameter of 0. 30", and a wall thickness of 0. 035". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length 10. 0" OD 3 8" ID 0. 30" Width 0. 035"