This is a set screw lock collar. It is for a 0.25 or 1/4 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 the LIDAR-Lite v3 Laser Rangefinder, a compact, high-performance optical distance measurement sensor from Garmin™. The LIDAR-Lite v3 is the ideal solution for drone, robot or unmanned vehicle applications.
This aluminum heat sink is designed for integrated circuits (IC) of electric components. It's easy to use, and provides the perfect cooling effect for your project.