20" Crossbow Arrows: CenterPoint Carbon Arrows are designed for crossbows that utilize 20-inch arrows. NOT to be used on the Hellion 400 or Hellion HRK; 400-Grain Arrows: The recommended weight for your CenterPoint crossbow to soar fast and far, each arrow has a 400-grain weight when fitted with a 100-grain field point (sold separately).; .003" Straightness Tolerance: Manufactured with precision and inspected with care, every arrow shaft shares a uniform straightness to within .003 inches for consistent accuracy every time; Lighted Half-Moon Nock: The glowing nocks are half-moon shaped to prevent the string from slipping above or below the arrow during firing. By keeping the string centered on the arrow, energy is transferred more efficiently from the bow during release; 2" Blazer Vanes: Delta-shaped vanes which stabilize the arrow in flight and provide spin to the arrow for increased accuracy; Compatible With DEADPOINT Broadheads: DEADPOINT Broadheads by CenterPoint are a classic, mechanical crossbow broadhead with 2 blades and 100-grain weight