1) High-precision,professional manufacturing 2) ACME,DIN, JIS,BSW, GB 3) ISO9001:2008, OEM service 4) low price/high quality Standard ACME,JIS,DIN ... ,BSW,GB etc.(including non-standard) Diameter 2mm-80mm Length The longest 8000mm Screw pitch(lead ... , quantities and etc Module We can do all kinds of screw in different sizes according to your drawings and samples ...