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Detailed introduction
Pure Carbon Bolts:
Weight grains: 173gr
Length inches:20inch (max:22inch)
O.D. inches :0.344 inch
I.D. inches:0.3 inch
Front of Center (%):about 21%
Straightness Tolerance (20 inch length from front to rear of shaft):+/_0.003
Matched Weight Tolerance :+/-3gr
Knock Style:Flat(moon is ok,at your option)
Insert Material:iron
Vane Size (inches):4 inch
Vane Material :rubber feathers(real turkey feathers is available)