Nikon Eclipse TE2000  Inverted Microscope T-FLC-E Motorized Epi- Fluorescent Rotating Turret. The Nikon product number is MEV51110 and it will fit all versions of the TE2000 fluorescent microscopes (TE2000-E, TE2000-U and TE2000-S). This unit is new, but has been removed from the original packing for inspection. Thank you for looking!