1、HOLE SIZES: This wood dowel rod maker features a positioning plate with 19 hole sizes ranging from 1/8 inch to 5/8 inch, with increments of 1/32 inch. The hole sizes include 1/8 inch, 9/64 inch, 5/32 inch, 16/93 inch, 3/16 inch, 7/32 inch, 1/4 inch, 9/32 inch, 5/16 inch, 11/32 inch, 3/8 inch, 13/32 inch, 7/16 inch, 15/32 inch, 1/2 inch, 17/32 inch, 9/16 inch, 19/32 inch, and 5/8 inch. 2、PRACTICAL DESIGN: Each positioning plate is equipped with 2 outlet holes and 2 grooves, making it easier to secure and stabilize the positioning plate on platforms or woodworking workbenches with built in holes. 3、19 HOLES: The additional hole options make production more convenient. The steel used for the positioning plate is hardened to a 59 to 61 HRC, ensuring durability and long lasting performance. 4、STURDY AND DURABLE: Made from premium steel, this dowel maker is built to last. It is hardened to withstand heavy usage and maintain its strength, providing reliable performance for all your working needs. 5、ACCURATE AND EFFICIENT: The hole sizes and the durable construction of this steel dowel plate ensures accurate and efficient works for various woodworking projects.