DynaPrep MDSF 408 Split Frame Electric Kits The DynaPrep MDSF Split Frame 408 4in-8in OD (DN100 - 200) Electric Kits are based on a rotating split ring style OD mounted machine tool (aka clamshells), designed to cut, bevel, single point and counterbore pipe. This kit is complete with a DynaPrep MDSF 408 rotating ring set, 1 extended parting tool slide, 1 extended beveling tool slide, no-time starwheel feed, Electric drive motor, operating hand tools, manual and storage case. Wachs DynaPrep MDSF modular design split frames are named for their ability to split in half for mounting to the outside of inline pipe. It maintains the low clearance design of the previous LCSF series, but builds on that legacy with dozens of innovations and features to make it more powerful, more versatile and faster to setup and operate. It redefines the standard in portable, cold cutting machine tools.