Easton Archery 4mm FMJ Match Grade Pro Shop Series Shaft (12 Pack)

Full Product Description (From the manufacturer)

Pull out all the stops with Easton's 4MM Match Grade Full Metal Jacket. 4MM FMJ Match Grade is an ultra-micro diameter shaft that offers less wind drift and minimizes friction to provides the industry's best penetration. Precision-made in Easton's USA factory, FMJ features a lightweight, strong carbon backbone with the added KE and accuracy of a precision -drawn aluminum jacket. 4MM Full Metal Jacket is offered in four spines sizes from 400 to 250 to cover virtually all bowhunting setups. 4mm Match Grade Aluminum 8-32 point half-outs (55 grains) come standard. Compatible with Easton's full lineup of 4MM Match Grade Halfouts (3 additional weight/material variations).