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 is set screw lock collar. It is for a 0.125 or 1/8 inch shaft. They are steel and zinc coated.
Roboteq's RoboPads charging contact system offers a precision, high current charging solution for mobile robots and Automated Guided Vehicles (AGV).
SparkFun's minimal design approach to Arduino. This is a 5V Arduino running the 16MHz bootloader.