12x 31.5" ID 6.2mm Tilt Inclined Feather Pure Carbon Archery Arrows

Brand: TopArchery
Spine: 400
Arrow overall length: 31.5"/80.5cm
Shaft length: 30"/762mm
ANO length: 30.5"/77.5cm
Shaft inner diameter: 6.2mm
Shaft material: pure carbon
Shaft color: black
Fletching type: real turkey feather
Tilt feather design to make the arrow rotate when flying
Feather size: 4"
Feather color: green
Feather shape: shield cutting
Arrowhead weight: 100 grains
Arrowhead type: replaceable practice screw-in field point
Arrowhead size: 8-32 screw thread
The nock can be rotated for both compound bows and recurve bows

This package includes 12 arrows.??