This is a set screw lock collar. It is for a 0.3125 or 5/16 inch shaft. They are steel and zinc coated. Perfect for keeping your shafts or bearings in place.
Shaft Collars (sometimes called lock collars) are easy to install; the collar provides an easy way to keep your shaft from sliding or your flanged bearing from coming out.
This prebuilt 4WD wheeled robot platform is equipped with 32mm motors, a motor controller, and Spektrum remote control. This pre-built is an customized version of TP-132-032.
Indoor GPS Starter Kit featuring one Modem and five Beacons to get your project running. Accurately position your robot to a couple centimeters indoors! Indoor Positioning System (IPS)