This is a set screw lock collar. It is for a 0.75 or 3/4 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 set screw lock collar. It is for a 0.125 or 1/8 inch shaft. They are steel and zinc coated.
This is powerful wheelchair motor. They make great heavy-duty robot motors. 250W 75RPM motors with 17mm keyed shaft output. They are sold individually and have an electric brake mounted on the back.
RPLIDAR A1 LIDAR - 360-degree two-dimensional 12 meter laser range scanner (LIDAR).