Precision Spacing Tool: Accordion-style rivet fan allows fast, accurate spacing for drilling, riveting, and hardware layout without measuring by hand, 20-Hole Layout Capacity: Marks up to 20 holes at once in 1/4-inch increments, with adjustable spacing from 1/2 inch to 2 inches, Engraved Measurement Marks: Clearly stamped spacing indicators ensure consistent, repeatable hole placement every time, Durable Stainless Steel Construction: Built from high-quality stainless steel to withstand repeated opening, closing, and long-term shop use, Time-Saving Universal Design: Ideal for rivets, nails, set screws, and bolts on a wide range of materials, helping speed up layout and fabrication work.