GPP Archery Carbon Arrow 20 Crossbow Bolts Arrow with 4 vanes and Replaced Arrowhead/Tip 12PC

Outter diameter : 8.8mm Inner diameter : 7.6mm Material of arrow shaft : carbon Length of arrow shaft : 20 Weight of arrow point (broadheads only) : 125 grain Weight:about 28g/pc Arrow nock : halfmoon shape Arrow vane : TPU 4 vanes two blue one white With aluminium insert for screwing the arrow tips Usage : for crossbow hunting or archery Please note that the picture is 12pcs . NOTE: If the plastic vanes shape is distorted.You can put the vanes into 176°F-194°F hot water for a few minutes or straighten them by using an air dryerthey .they can be recover the original shape. This is NOT a toy do NOT shoot at people