Mounting plate to attach Kino Flo 2ft and 4ft fixtures to a standard 5/8in (16mm) stud Double socket allows you to mount vertically and horizontally Supports up to 17.6lbs (8kg) One central knob securely locks two ball heads Lasering mark for easy recognizition of lock and unlock direction The Kupo Mounting Plate with Super Knuckle Baby Receiver features a rear mounting plate with twist-Lock for Kino Flo 2ft and 4ft fixtures and mounts to any grip equipment that comes with 5/8in (16mm) stud. This heavy-duty aluminum plate features a double socket and a large ergonomic knob allowing you to lock easily with one clamping action. It can support up to 17.6lbs (8kg). Specifications Weight: 1.83lb / 0.83kg Color: Black Product Height (in): 2.01in Product Height (cm): 5.1cm Product Length (in): 7.28in Product Length (cm): 18.5cm Product Width (in): 5.71in Product Width (cm): 14.5cm Product Weight (lb): 1.83lb Product Weight (kg): 0.83kg Maximum Payload Capacity (lb): 17.6lb Maximum Payload Capacity (kg): 8.0kg Primary Material: Aluminum Warranty: Limited Two-Year Warranty