Product Name: N-Sf10 or Fused Silica Dispersion Prism Model NO.: PDP Customized: Customized Application: Laser or Range Finder Material: Optical Material Shape: Triangle Usage: Beam Dispersion Type: Dispersion Prism Surface Finish: 20/10 or Better Surface Flatness: ?/4 or Better Surface Flatness Error: ?/8 or Better Trademark: SINOCERA Transport Package: Carton or Customized Specification: Customized Origin: Shanghai, China HS Code: 9001909090 Product Description Specifications:1. Material: H-K9L, Fused Silica2. Surface Quality: 10/5~60/403. Surface Flatness: λ/4 or λ/8@633nm4. Angles: <±3 arc min (Standard)<±10 arc sec (High Precision)5. Clear Aperture: ≥central 80%Product Code: PDP+ Material Code-Size-Surface Quality-Surface Flatness- Angles-CoatingSize=AxL