Post 2-3/8 Plug-InSpringfield's 1300715 Plug-In Fixed 2-3/8 Locking Seat Post is designed for use with Trac-Lock Locking Swivel (Springfield 1100031-L1) and 2-3/8 Plug-In Bases (sold separately). It measures 15 from the top to the bottom of the post. The post features a high-strength aluminum post with an anodized finish to help prevent rust and corrosion. Features:15 height measured from the top to bottom of the postHigh-strength aluminum construction with an anodized finishUse with Track Locking Swivel (1100031-L1)Use with 2-3/8 Plug-in Bases (sold separately)5-year warrantyFit type: Universal Fit