Easton SuperDrive 19 380 spine Carbon Shafts - 12 Pack - Made with Easton’s Superdrive carbon construction, the High-velocity Superdrive 19 gives archers a lightweight, smaller diameter arrow choice that is ideally suited for 3D competition where wind could be a factor, as well as field archery and outdoor target archery, making it a great all-purpose outdoor competition arrow. Superdrive 19 features an adjustable stainless steel point system to allow a ­­­shooter to customize the setup from 90 to 200 grains with interchangeable weight modules. Lightweight, all-carbon construction Straightness ±.002in Weight Tolerance: +/- 0.5 grains Outside Diameter: 19/64in All-Purpose outdoor competition arrow – Suitable for 3D, Field Archery and Outdoor Target Archery 90 grain base point adjustable up to 200 grains with interchangeable weight screws Bushing or pin nock compatible