Redding Neck Sizing Bushings are designed for precision and versatility, available in two styles that share identical external dimensions of 1/2 inches O.D. x 3/8 inches long, ensuring compatibility and seamless interchangeability in all Redding Bushing Style Sizing Dies. These bushings are offered in .001 inches size increments, covering the full range from .185 inches to .368 inches, accommodating calibers from .17 to .338. Each bushing is clearly marked with its specific size ID for easy identification. By selecting the right bushing, you can precisely adjust neck tension, providing the ideal grip on the bullet to hold it securely without the risk of excessive resizing, enhancing the overall performance and consistency of your reloaded ammunition.