Check the listing for details. 8MM/0.31" ID Archery Arrow Nocks & 50 Pcs & Plastic & Red. Condition: New. Listed at 16.97 USD. Materials:This arrow nocks is made of durable plastic, making it lightweight and portable. It is sturdy and durable, resistant to deformation or breakage even with prolonged use. Its double-claw structure ensures a tight fit to the bowstring, enhancing friction and preventing the fletching from loosening or falling off during shooting.Relevant Usage:This plastic arrow nocks is suitable for carbon fiber, fiberglass, wood, and aluminum shafts. Its versatility ensures perfect compatibility with a variety of bow types, including compound bows, recurve bows, and traditional bows, making it a suitable choice for archery and hunting enthusiasts.Easy-to-Use:This archery arrow nocks features a press-fit design, making installation and adjustment very convenient.