Part of Dormer?s Hydra range of interchangeable drill heads and bodies, the long length H858 Hydra drill body has a common shank size for versatile tool holding options and will give high performance, even after many head changes. The internal coolant holes align perfectly with the Hydra drill heads for efficient cooling and changing a drill head is both quick and easy and can even be done without removing the body from the machine. For even more versatility and reductions in tooling needs, several diameters of Hydra head will fit with one size body. Please see R950, R960 and R970 Hydra drill heads to fit to this body.