- Small in size. Big on advantages. The Hilmor® Compact Bender will help you get the job done right - from start to finish. Small-space capabilities, one-handed operation and precise bends - you get it all. A universal crossbar and color-coded mandrels provide simple setup and easy size identification. An advanced mandrel design and quick-release mechanism allow for an easy tube release. You can count on precise bends of 1/4 in, 5/16 in, 3/8 in, 1/2 in, 5/8 in, 3/4 in and 7/8 in tubing up to 90 deg.