Manfrotto 123 Clamp Pivoting for Booms for 35mm diameter boom shafts 28mm Stud, 16mm socket

This is a Tilthead with Spigot. It is a safe and secure way to mount any light fixture or accessory with a 5/8” receiver on a stand. The Tilthead features a ratchet locking knob that prevents sudden movements when released. A built-in umbrella receptacle with a knurled locking screw accepts umbrella shafts up to 8 mm.