the sizes can be made upon the request specialist of quartz further-processing, pls tell me your size or drawing, I will give you the lowest price bases on best quality.Material Quartz glassPurity :More than 99.99%Efforts 1, tolerance control (min:±0.1)2, accurate dimension according to customer's request3, complete after-service systermSpecificationDiameter:1.3-350mm Thickness:0.6-10mm (on the ...