Precision-balanced to G 6.3 at 15,000 rpm, maintenance-free SINO-R holds tool securely, with max torque transmission of 627 lb-ft, at clamping diameter of 1.25 in. Flexibility due to use of intermediate sleeves allows clamping of nearly all common tool shank diameters, while design promotes tool life and material removal rates. Based on expansion technology system with solid body and pressure medium, toolholder delivers radial rigidity and dampening characteristics that increase productivity.