The SUBURBAN BXP-040606 Box Parallel is a tool that you will find indispensable. It has been designed to meet the demands of the job, making it an essential for your workbench. The box parallel has all faces and ends finished square and parallel. Made from machined 3/4 in. thick material, this box parallel is also accurate to +/- 0.015 in., ensuring that it meets the requirements of any application. It has a length, width and height of 6 in., 4 in., and 6 in respectively. The tool comes with a machined finish as well as being squareness to 0.0005 in. and having parallelism to 0.0005 in.. This Suburban BXP-040606 Box Parallel is a great addition to your workbench because it helps you produce high quality results every time.