The W-QPA212 from Ross Optical Industries is a Waveplate with Wavelength Range 266, 355, 532, 632.8, 780, 808, 850, 980, 1064, 1310, 1480, 1550 nm, Waveplate Thickness 8 mm, Waveplate Diameter(Inch) 0.5 Inch, Waveplate Diameter(mm) 12.7 mm. More details for W-QPA212 can be seen below.