CUSTOM MADE TO MEET YOUR NEEDS We fulfill customer's requests for a wide range of applications, including: 1. Optical Systems and Various Educational Optical Experiments. 2.For Spectrophotometer Image Analysis â?? CUSTOM CAPABILITIES Material: Stainless Steel, aluminum,glass,ceramics,copper and so on Thickness (mm): 0.01mm, 0.02mm, 0.03mm, 0.05mm,0.08mm, 0.1mm, 0.12mm,0.13mm, 0.15 mm, 0.2mm,0.25mm,0.3 mm Outer Diameter (mm): 9.5 or customized Slit Length (mm): 3.0 mm or customized Slit width:5um,10um,25um,50um,75um,100um,200um,500um,1000um or at customer' request Type:Unmounted Precision Pinholes:Available,Sized Ranging from 1 to 1,000 Microns