Pin bushing from Top Hat. Key features: Protect your shaft from nock end impact. Compatible with all standard size pin nocks. Sizes for many of the most popular shafts. Technical specifications: Material: 7075t Aluminium Weight: .165: 7.4 grains .166: 8 grains Compatibility: Black Eagle: Deep impact, X Impact Easton: A/C injection, A/C/C, A/C/E, ACG, Carbon One, FMJ, Inspire, FMJ Gold Tip: Pierce, Pierce Platinum, Pierce Tour Victory: VAP