10pcs x 10MM LED optical lens smooth convex lens for 1W 3W LED lens Outer diameter: 10MM Height: 4.5MM Step height: 1.5MM Light transmission rate: 93% Focal length: 7MM Beam angle: the angle can be adjusted Material: imported PMMA package included:10pcs x 10MM LED optical lens smooth convex lens for 1W 3W LED lens