ITEM NAME:1x WF20X Biological Microscope Widefield Eyepiece Wide-Angle Lens Interface Description: WF20X widefield eyepiece. 20X magnification eyepiece lens. 30.5mm Interface suitable for Biological Microscopes. It is Achromatic (International DIN/JIS) standard size with outside diameter of approx 30.5mm. Specification: Feature:Wide Angle Material: Metal Magnification: 20X Mount: 30.5mm, Suit for Biological Microscope Package Includes: 1 Piece WF20X Widefield Eyepiece SKU: ALU0013959977008737.WF20X widefield eyepiece. 1 Piece WF20X Widefield Eyepiece. 20X magnification eyepiece lens. Mount: 30.5mm, Suit for Biological Microscope. 30.5mm Interface suitable for Biological Microscopes. Feature:Wide Angle.