This pair of dividers come with a removable solid brass pencil attachment and a carbide scriber. Pencil holder will work with standard #2 wood pencils. Overall length 6-1/4” with opening of 7-1/2” when legs fully opened. Dividers are made from carbon steel then machined and lapped. The box joint is riveted and will move smoothly and hold settings. Has locking quadrant mechanism with integrated stop. Fashioned with square legs and round hardened tips.