Ultra-Glide spool shaft for frictionless, freespooling performance. Pre-lubricated with Sub-Zero™ low-temperature lubricant. Durable, molded-polypropylene base. 17-1⁄2" flag shaft. High-vis neon green. Molded-in 19" ruler. Tapered rails for easy removal from snow and ice. Removable spool shaft. Dual trip settings. Also includes line, a depth indicator, and line markers.