Tele Vue 13mm Ethos 2" / 1.25" Eyepiece with 100 Degree Field of View.
</br></br>
<div style="text-align:left"><b>[Product Information]</b></br><ul><li class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your " id="replacementPartsFitmentBullet"><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a class="a-link-normal hsx-rpp-fitment-focus" href="#">Enter your model number</a><span>to make sure this fits.</span></span></span></li><li><span class="a-list-item"> 
							Apparent Field of View - 100 degrees
							
						</span></li><li><span class="a-list-item"> 
							Focal Length - 13mm
							
						</span></li><li><span class="a-list-item"> 
							Effective Field Stop - 22.3mm
							
						</span></li><li><span class="a-list-item"> 
							Eye Relief - 15mm (accepts DIOPTRX eyesight astigmatism corrector)
							
						</span></li><li><span class="a-list-item"> 
							Barrel Size - 2"/1.25"
							
						</span></li></ul></div>
</br></br></br></br></br></br></br></br></br></br>

</br></br></br></br></br></br></br></br></br></br>
<img src='http://ecx.images-amazon.com/images/I/41r8Bq8iYNL.jpg' noproxy></br>