Redding Neck Sizing Bushings are available in two styles, both featuring the same external dimensions of 1/2 inches O.D. x 3/8 inches long, ensuring compatibility and easy interchangeability with all Redding Bushing Style Sizing Dies. These bushings are offered in .001 inches size increments, covering the range from .185 inches to .368 inches and are suitable for all calibers from .17 to .338. Each bushing is clearly marked with its size I.D. to simplify selection. By choosing the correct bushing, you can achieve the ideal neck tension to securely hold the bullet without excessive resizing, ensuring consistent performance and accuracy in your reloads.