Metal bond diamond grinding wheels for optical glass 1.Application:mainly used for machining quartz crystal tungsten, carbide, ceramics, glass, composite, sapphire, ferrite, refractory, thermal spraying material, high speed steel, tool steel, mould steel, stainless steel, titanium alloy and so on and so on . 2.Type code:1A1, 1V1, 1EE1, 1FF1, 3A1, 11A2, 6A9, 14A1,14A1R,11V9, 11C9, 4A2, 6A1,6A2, 12A2, 9A3, 1F1,12V2, 1L1, 14EE1, 4B1, 14E1, 4A2P, 11B2, 6A2T, 11V2, 9A1, 1A1R, 1F1, 1A8, 9A1, 9A1B,3K1, 1A1W, 4V2, 1A3, 1A2T,1A2, 12C9 14E6Q, etc. 3.Payment way:T/T,Western Union 4.Transport way:shipping,air parcel like International express such as SF,UPS,DHL,Fedex,DPex,EMS etc. 5.Port :Shanghai,Beijing,Hongkong 6.Packing:foam,carton,1-2piece in one box 7.Delivery time:3 to 10days If you need our products,welcome to contact Nina: 8.Skype:nina-superhardtools 9.InternationalQQ:1912337285(chatting tool)