CMM Styli M3 Thread for A-5000-7606 4.0mm Ruby Ball Stainless Steel Stem L21mm

Thread Size:M3
Stem Material:Stainless Steel 
Ball Material:Ruby
Ball Diameter:4.0mm
Overrall Length:21mm
Effective Work Length:17.2mm
Stem Diameter:2.5mm
Package:1Pcs