Manual tabletop lathe (inch) Standard parts 3.5" diameter x 17" (upgrades available) Create custom turned parts Many additional parts included to get started Available in metric or imperial The Sherline 4400 Series Tabletop 3.5" x 17" Manual Lathe Basic Package (inch) has 17″ between centers. The electronic speed control allows continuously variable speed control from 70 to 2800 RPM without belt changes. There is a second pulley position available that offers extra torque at low RPM if needed. Many machinists find that the extra space between centers comes in handy when working with a part held in a chuck and a larger tailstock chuck with a long drill bit in place. The combination of chucks, part and drill can eat up a lot of the available center-to-center distance, and a little extra capacity is often appreciated. This lathe offers the same diameter turning capacities as the shorter lathe and same powerful motor/speed control. The differences are both the extra 9″ of center distance and the addition of extras like the adjustable zero handwheels and rocker toolpost, making this lathe a good value for the extra cost.