These high quality ISO30 Toolholers feature a ER32 collet interface to hold tools with a shank diameter up to 3/4".  The are precision manufactured in Germany, and are balanced to 24,000rpm.  

Brand: T-Tool USA
Runout: .0001" taper to taper
Balanced: 24,000rpm G2.5
Pullstud: HSD
Country of Origin: Germany

ISO30 ER32 Tool Holder