The Lyman H&I Bullet Sizing Die comes in various diameters, such as 0.224, 0.301, 0.313, 0.358, 0.378, 0.401, 0.429, and 0.501 inches, and others. With an improved design that includes 90-degree hole spacing, this particular sizing die is exceptional. In addition, the die features a hardened interior and tapered mouth that ensures proper alignment for outstanding cylindrical shape.Lyman is known for manufacturing incredible reloading and casting equipment, tools, and accessories, which is evident in this die. In addition to being competitively priced, this bullet sizing die made for Lyman products is also interchangeable with RCBS.