Inspired by a vise that Joseph Moxon described in the 17th century, this hardware lets you build a portable twin-screw vise that can be secured anywhere on a benchtop. What's more, this design lets you elevate the work to a comfortable height, so you can make close cuts without stooping. The two 8" long 3/4" Acme-threaded vise screws and 5" diameter cast-iron handwheels are precision-machined for remarkably smooth, low-friction operation.