The Benchmate Pin Vise Fixture converts your BenchMate Encore QC or QCX into a pin vise in seconds. Designed with a self-centering jaw system that makes it the ideal tool for stone setting, small engraving, and other precision work. To install, simply loosen the bottom knob on your BenchMate, drop in the fixture and turn it to lock in place, then tighten the knob. Use it with or without a microscope. Machined from high grade stainless steel and furnished with four 3/32" steel and four 3/32" brass pins, all 3/32" diameter. Made in USA.