The 5 hole – die-cast center tap base plate has a black finish. It mounts leveling feet and threaded stem casters, and is commonly used on profiles with eight slots to center mount the foot or caster. This base plate can also be used on a profile side. It requires a tap to mount to a profile end. Additional Information: When using an M12 socket head cap screw (SHCS) the base plate can only be mounted to the profile end.