Carbon Arrow 28/30/31 Inch Spine 500 with Replaceable Arrowhead for Compound Bows Recurve Bow Archery Hunting

ID: 6.2mm, OD: 7.6mm, about 32g per arrow They are solid & well made. Precision carbon hunting arrows made for extended durability and long lasting practice. The 100 grain tips are nickel plated stainless steel, the screw tips are with insert can be changed. Nocks are not fixed by glue. It can be adjustable for both compound bow and recurve bow. You can use a coin or other hard object to rotate the nock slowly as photo. You can change the nock easily. The arrows came extremely well packaged and the quality is also impeccable..syi