Specification:Brand: DatysonColor: BlackMaterial: Aluminium AlloyFocal Reducer: 0.5XInterface: 1.25 inch / 31.7mmThread: M28*0.6mm Size: Approx. 30 x 13mm / 1.18 x 0.51inchWeight: Approx. 0.42oz / 12gPackage List: