Product Description Specification Arrow handle material: AL6061 aluminum Color: silver Size: 6.2x22mm / 0.244x0.86inch Suitable for: outer diameter 7.6mm, inner diameter 6.2mm arrow shaft Weight: 25g Feature Aluminum arrow inserts are precision manufactured, with 12 arrow inserts per package. Universal ID 0.244'' carbon arrow rod, standard 8 / 32 thread screw size, very suitable for compound bow, reverse bow and crossbow target practice shooting. Perfect fit and easy to use, just stick the glue to the end of the shaft until the glue is firm, and then screw it into the field point. The standard 8-32 insert allows you to screw in and use various tips (wide head, judo tip, blunt tip, field tip, fishing tip, etc.) on the same arrow.