Redding Neck Sizing Bushings are available in two versatile styles, both sharing identical external dimensions of 1/2 inches O.D. x 3/8 inches long, ensuring seamless interchangeability in all Redding Bushing Style Sizing Dies. These bushings are offered in precise .001 inches increments, spanning from .185 inches to .368 inches, covering all calibers from .17 to .338. Each bushing is clearly marked with its size I.D., making it easy-to choose the right fit for your needs. By selecting the appropriate bushing, you can apply just the right amount of neck tension to securely hold the bullet, avoiding unnecessary resizing and ensuring consistent, high-quality ammunition.