ErChen 78mm Lens + 82mm Reflector Collimator Base Adapter + 85mm Fixed bracket for 30W 50W 80W 100W 150W LED This listing is for 1 lens + 1 base + 1 Fixed bracket only, Not include led After installation size: 70 degree, After installation size: 84.5mm(D) X 42.7mm(H) The tolerance of the lens diameter and height is 0.5mm. The luminous angle of the convex lens is 5-90 degrees (referring to a single-point light source). The integrated light source emits light at about 30-90 degrees.