SparkFun Tube - Aluminum (1"OD x 2.0"L 0.82"ID) Tubing Rs. 1501 - Rs. 5000 4V and a rated forward

4V and a rated forward current of 30mA

a simple looking ball-point pen that allows you to draw circuits instead of soldering or wiring them to a breadboard

NEMA 17 form factor

these mini breadboards can be snapped together to form larger stretches of board

SparkFun Tube - Aluminum (1"OD x 2.0"L 0.82"ID) Tubing Rs. 1501 - Rs. 5000 4V and a rated forwardThese 2" long aluminum tubes have an outer diameter of 1", an inner diameter of 0. 82", and a wall thickness of 0. 09". 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 2. 0" OD 1" ID 0. 82" Width 0. 09"