Description GZB-S uniform intermediate sleeves: A cool head for high-precision machining, proven technology, new perspectives. New GZB-S uniform intermediate sleeves are now available in two versions: in the proven coolant-proof version, and with innovative peripheral coolant channels. Both offer the unbeatable advantages of SCHUNK intermediate sleeves. And both can be used in SCHUNK TENDO, TRIBOS, SINO-R toolholding systems, as well as in any conventional hydraulic expansion toolholders. Advantages – Your benefits - Two versions: Coolant-proof up to 80 bar or with peripheral coolant - Versatile length preadjustment due to moveable intermediate piece