Nylon Spike Fits: Stiffy Hybrid 1.25” Inside Diameter Stiffy Guide Series 1.25” Inside Diameter Stiffy Graphite 1.25” Inside Diameter Stiffy Fiberglass 1.25” Inside Diameter Features: Nylon Spike: Built to handle the toughest conditions. Perfect Fit: Specifically designed for 1¼ inch inside diameter Stiffy push poles to ensure a secure and reliable fit. Reliable Performance: Resilient Solid Nylon Spike durable for poling over hard bottoms and shells. Prevents Leaks: Includes a foam plug insert to help prevent leaks and enhance durability. Lightweight: Weighs 3.6oz How to install Spike video: https://youtu.be/gHN29M3Jt7o Stiffy Standard Spike Package Includes: Nylon Standard Spike Foam Plugs 911 Marine Grade Epoxy(NOT INCLUDED) You can also use 2 Part JB Weld as its more readily available