Running the centerline of Metaloid MS spinning reels is an oversized 6mm stainless steel spool shaft. Over the spool shaft, an 8mm forged brass spool shaft sleeve provides a rock-solid foundation for the machined aluminum spool and drag system. This wide base stabilizes the spool and drag system and in testing delivers an additional 2-pounds of drag pressure by simply maintaining proper alignment of the drag stack under a heavy load.