William Optics New Generation 2-inch, 90 degree diagonal mirror with brass compression ring and 1/10 lambda for Schmidt-Cassegrain/Maksutov-Casegrain. Comes with 1.25-inch adapter and compression ring. No scratches or marks. In original foam packaging. Bought in January 2003 for $129.95. Will sell for $90 and ship at my expense in CONUS. You save about $40. Seek cashier’s check or money order.