AdirPro All-Metal Single Tilt Prism 720-07 With Case<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>2 ½ inch (62mm) diameter</li><li>0/-30 mm offset</li><li>5/8 inch - 11 inches thread</li><li>Adjustable brass knob</li><li>Durable padded case</li></ul></div><img src="http://ecx.images-amazon.com/images/I/518KvQa6cZL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41-orjf0w0L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51RwQrlHOpL.jpg" noproxy>