SDSF Small Diameter Split Frame 4.0 SDSF 4.0 Small Diameter Split Frame designed for pipe and tube from 3in to 4in O.D. (DN75-100). 6 models are available to cut, bevel and counterbore pipe and tubing from .5” to 6.6” (12.7mm – 167.6mm) O.D. Includes 4in frame, pinion housing, spare fastener kit, operating hand tools, manual and storage case. Tool slides, collets or legs and drive motor sold separately. The SDSF series offers a lightweight and low profile design to fit into the tightest quarters, such as in pipe racks. Designed to cut, bevel and counterbore pipe up to .4375” (11.1mm) wall thickness, it splits in half and mounts via either self centering collets or with versatile extension legs. A double sided pinion housing is standard for versatile drive motor mounting.