Redding Neck Sizing Bushings are offered in two styles, both with identical external dimensions of 1/2 inches O.D. x 3/8 inches long, ensuring full interchangeability with all Redding Bushing Style Sizing Dies. These bushings are available in precise .001 inches size increments, covering a range from .185 inches to .368 inches and are suitable for calibers from .17 to .338. Each bushing is clearly marked with its size I.D., making it easy-to select the correct option. By choosing the right bushing, you can achieve the perfect amount of neck tension to securely hold the bullet without excessive resizing, ensuring consistent and reliable ammunition performance.