Doughty Single Ended Drop Arms They are British designed and manufactured lighting supports for studios and locations of all types. The adjustable drop arm with pre-drilled 28mm diameter holes comes with a 29mm diameter receiver and a securing pin. Generally used with a Barrel socket clamp or TV Clamp. The open space design allows the luminaire to rotate through 360 degrees whilst being safely retained by the securing pin. It offers a high degree of performance to give solutions to challenging lighting demands. 5 sizes are available. For any inquiries, please contact us via chat. Specifications: Length and Weight: T45610: 250mm & 1.66kgT45612: 500mm & 1.85kgT45614: 750mm & 2.04kgT45616: 1000mm & 2.23kgT45618: 2000mm & 4.46kg Receiver: 29mm Diameter SWL: 100kg