Aluminum Crossbow Bolt 20" 2219 Completed w/ Nock Insert Tip Vanes Hunting Equipment 12 Pk Shaft Material: Aluminum Length: 20" OD: 8.8mm Weight: 30 g-31 g feathers: 4" plastic vanes Target point: 125gr steel Thread: #8-32 UNC, Changeable for broadhead stright degree:6/1000 In bulk package