Diamond Grinding Blocks: 1.Metal Block:30#,40#,50#,60#,80#,100 ... .Resin Block:400#,600#,800#,1500#,3000# Diamond Grinding Blocks: Be used for automatic continuous polishing machine or single head ... T/T.2.Pls leave your precise information of phone number ,address and full name after you pay,as it ... .By UPS,DHL,FedEx:3-5 Business Days.Tracking number are sent out automatically when a package ships.Return ...