These set screw hubs make it capable to connect a micro gearmotor with a 3mm bore to a precision disk wheel or other object with a 0.77" hub pattern that needs to be rotated. These hubs have an outer diameter of 1", a bore of 3mm, a 6-32 set screw, and utilizes the 0.77" hub pattern.
Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected together. The wide range of components makes building complex electromechanical prototypes or finished projects a reality.