Leofoto GC-282AL is an aluminum boom with a geared extender. The arm has a grip knob at the rear end which is also the combined lock for the pan (360deg) and tilt (180deg)action. There's a locking wheel at the end to stop it slipping when in the upright position. and a friction knob to adjust the tension on the geared action. Can be used for video too
GC-282AL specifications
Mounting platform diameter: 54mm
Tube diameter: 28mm
Length: 410-640mm (total length of 410mm when retracted fully, 300mm from center of arm base till fully extended, and total length of 640mm when fully extended end to end)
Weight : 740g
Max. load: 3kg
Base diameter: 46mm