SCHUNK intermediate sleeves allow clamping of several different shank diameters from 3 to 25 mm with just one toolholder. The universal intermediate sleeves GZB-S are available in two versions: coolant-proof, tested and with innovative peripheral coolant channels. Both provide the unbeatable advantages of SCHUNK intermediate sleeves and can be used in the SCHUNK toolholding systems TENDO and TRIBOS as well as in all commercially available hydraulic expansion toolholders.