CenterPoint Archery CP400 Select 400-Grain 20-Inch Carbon Arrows are designed exclusively for the CP400 crossbow. Made of durable 100% carbon fiber with 80-grain brass inserts and aluminum nock collars these arrows are built to withstand the high-energy demands of crossbows. Each arrow has a .346-inch OD and .300-inch ID, comes with custom ligthed nock, hand-fletched with 2-inch vanes in orange and white and 100-grain field point. Offered in a pack of 3 to keep your quiver full on the range or in the field.