Black Eagle Rampage Stainless Steel Half Outs 400 spine 12 pk. Designed for use with Rampage and Renegade arrow shafts;Built from high-strength stainless steel;Engineered for maximum penetration and performance;Tested through multiple material types for reliability;Weight for 250-300 spine arrows: 55 grains;Weight for 350-400 spine arrows: 52 grainstable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 1100 Product Group Code: 1100A Product Sub Group 1: 1100A2 Inactive: No