Outter diameter : 8.8mm
Inner diameter : 7.6mm
Straightness:±‰6
Spine:400
Material of arrow shaft :carbon
Arrow nock :High quality plastic halfmoon shape
Arrow vane : 4" vanes rubber TPU
Arrowhead: Replaceable Steel
With aluminium insert for screwing the arrow tips
Length of arrow shaft :16" 17"18" 20" 22"
Usage : Crossbow hunting