The CLB-3050-70PM from Laser 2000 (UK) Ltd. is a Optical Lens with Wavelength Range 400 to 700 nm, Focal Length 7 cm(70 mm), Center Thickness 5 mm, Radius 3.633 cm(36.33 mm), Edge Thickness(ET) 1.8 mm. More details for CLB-3050-70PM can be seen below.