This is a 1/8 inch drill bit. We use this for drilling a hole that will take a #4 machine screw. The majority of our kits and circuit boards use a #4 machine screw so this drill bit size is a must for putting together a robot kit.
This is a spool of Fiber Optic Cable with slip ring for tethered control systems. It includes the media converters and provides a transparent ethernet connection that is 1km long. Different lengths can be requested.