The product in display is adjustable Jewelers saw frame Oscar type can hold standard 5.1 inch(13.0 cm) jewelers saw blades, or even shorter pieces of blade. It can be used with all types of jewelers saw blades including flat and spiral for cutting metals, plastic, wax. Blades are secured in the wing nut screw clamps, and a thumb screw is used to adjust the length of the frame. Removing the slide adjustments means less wobble. It has a flat steel frame and a hardwood handle. The 3 inch (7.62 cm) depth, from blade to inside frame, is a good size to maintain control when working with sheet metal. Overall measures 7 x 7.5 x 1 inch (19 x 30.5 x 2.5 cm) with including saw blade grade 1/0, 2/0, 3/0, 4/0, 5/0, 6/0 (Each 24 Pcs) Total Pack of 144 Piece. PLEASE CLEAN AND APPLY OIL BEFORE USE. Note: Remember to wear eye protection. Note: Photographs are for illustration purpose only. Actual item may slightly differ from the pictures shown. Scorpion is committed to providing the customer with the best source for value possible on the market. You will enjoy the quality, function and usefulness of our products