0.15~4.0mm copper single hole brass EDM tubes and multi hole brass EDM tubes

0.15~4.0mm copper single-hole brass EDM tubes and single hole edm tubes,
Description
copper single-hole brass edm tubes 
web-type/I-type brass edm tubes 
copper tubes 
Ducal channel /z-hole round  brass edm tubes

a: single hole 
outside diameter:D0.15mm, 0.2mm 0.25mm ,length:200mm or 300mm
outside diameter:0.3~6.0mm (each size interval 0.1mm) length:400mm or 500mm

b:Multi hole:
outside diameter:0.12~6.0mm (each size interval 0.1mm) length:300mm or 400mm

Brass tube electrode is mainly used in small hole EDM drill for mould steel(SKD-11) materials