Purple anodized teardrop bolt handle knob provides a custom accent on any Ruger Precision® Rifle. CNC machined from durable 6061 T6 aluminum to withstand hard use. Knob includes a non-reflective matte purple surface finish. Fits bolt handles with standard 5/16 - 24 threads. Installs easily on bolt handle using a ¼" Hex wrench (not included). Dimensions: 1.21" long with a diameter of .9". Made in the USA.