Carbon Express Tank 25's are an all purpose large diameter arrow perfect both indoors and on the 3D range. 
It's low GPI helps maintain a fast and flat trajectory and the large diameter is great for line cutting. Featuring a 400 spine it's also great for those who are looking at a spine that's closer to their ideal size. 

Proprietary Diamond Weave - Unparalleled spine consistency
.400" Spine - Ideal for average - short draw length and low poundage shooters.
Versatile - Use as a 3D and Indoor arrow.
BullDog Nock Collar - Unrelenting strength and durability for nock-end impacts (Free dozen with the purchase of shafts)

Nock option is limited to the CX Nock Bushing for insert nocks. No Pin Adapter available any longer.