Check the listing for details. Long Working Distance DIC Differential Interference Plan Achromatic Objective. Condition: New – Open box. Listed at 58.90 USD. DIC Differential Interference Objective 5X 10X 20X 50X 100X Metallurgical Microscope Infinite Plane Long Working Distance Objective Lens Description Long Working Distance Infinity Plan Objective Lens 5X 10X 20X 50X 100X for Metallurgical Microscope Type of screw thread: Standard RMS 20.2mm Material: Metal Magnification: 5X 10X 20X 50X 100X Packing List: 1pc Objective Lens Shipping Items are normally shipped within 1-2 working days of receiving (cleared) payment and will be shipped by air parcel to worldwide. We do offer combined shipping discount if you pay all together.The shipping & handling fee includes packing, warehouse and distribution costs, not postage only, these are non- refundable.The estimated shipping time is about 10 to 20 days to arrive buyers' location. All items will only be shipped to the address you registered with PayPal. please make sure yourshipping address on Ebay is correct BEFORE placing your order. Contact Us Your satisfaction is important to us. If you are not satisfied with our products/services, please contact us BEFORE leaving us any neutral or negative feedback. We will try our best to resolve any issue. If you satisfied our items and service, hope you could leave a positive feedback with all stars for me. We are using the automatic eBay Feedback system which would automatically leave positive feedback after receiving positive feedback. You can contact me if you have any questions. Our Business Hours（Beijing）: 8:30A.M.-5:30P.M. Mon-Sat