Jeweler's Adjustable Work Holder Vise - Compression & Expansion Force Essential jeweler's tool for keeping delicate workpieces steady & stable; comfortable maple handle Machined aluminum base-halves slide on dual chromed-steel rods for applying even pressure 60 peg positions 6mm on-center to get perfect fit on items up to 2-1/4" dia.; 8 stainless steel pegs Steel tension screw with knurled adjustment knob; great for irregular, odd-shaped pieces Hold watch movement/cases, jewelry pieces, small electronic components; non-magnetic