The MBC-20 18mm Ball Head from Leofoto acts like a 75mm half ball, providing +/-455° of leveling range capability. It locks easily and securely in position with the handle lever at the base of the ball. This levelling base installs on any tripod leg set that has a 1/4” threaded mounting stud. It can be used for a lightweight ball head option for backcountry use or for use with a light weight rifle.