EROWA screw locking chuck 3 in 1 base made in China good quality EDM tooling via CPWS®-China Precision Workholding System Inc CPWS® is China manufacturer and exporter of compatible EROWA,System 3R EDM tooling workholding fixture, very competitive price, good precision 0.002mm repeatability, export to many European countries, USA,Canada for years, quality is stable, (www.workholdingtool.com sara@workholdingtool.com)