With lighted Alpha-Blaze nocks
Features a Nock Retention Groove that snaps into the TriggerTech trigger box on the TRX 515 & TX 440 allowing the user to both hear & feel the positive engagement of the nock to the string – indicating your arrow is properly locked & loaded in the crossbow. 
Unidirectional carbon inner layer for stiffness and a woven carbon fiber outer layer for impact strength.
Weight - 445-grains (matched within 1-grain)
Vane - 3" Bohning X
Brass Insert - 87-grain
Required for use with TenPoint rail-less crossbows -TRX 515 and TX 440
Straightness to within .001”
Length 20"