Description <br> Dear customer, thank you for choosing to shop at the store. <br> Our products have affordable prices and good quality. We support <br> <br> and <br> . <br> Please read the product description as much as possible to avoid unnecessary unpleasantness <br> . <br> Please contact us if you have any problems during shopping. <br> We will communicate with you in a sincere manner and do our best to solve the problems arising in the shopping process. <br> Happy shopping. <br> Magnification: 4X <br> NA: .10 <br> Optical Working Distance: 29.04mm <br> Thread: RMS <br> Mechanical Tube Length: 160mm <br> Cover Glass Thickness:0.17mm <br> Color Correction: achromatic <br> Field Correction: plan <br> Immersion Medium: none <br> Nosecone: fixed <br> Additional Information: <br> Objective-Iris: Without Iris <br> Objective-Mounting Size: 20mm <br> Optics: Plan <br> Objective Power: 4X <br> Objective-Type: Compound Brightfield Darkfield <br> Colour: silver <br> Material: metal <br> Package Contents: <br> 1 x achromatic Objective Lens <br> Only the above package content, other products are not included. <br> Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. <br> Dear customer, if you want to buy in large quantities, please contact us, we will offer another preferential price. <br> _x005f_x000D_ <br>