- Fixes and prevents head rattle - Easy to install - Comes with self-drilling stainless steel head screws The Lacrosse Doctor Head Lock is a simple yet powerful solution for eliminating head rattle and securing your lacrosse head to the shaft. Designed to provide a firm anchor point for the head screw, it pulls the head and shaft tightly together—fixing looseness and preventing future movement. Made of durable, lightweight, flexible polyurethane and easy to install, the Lacrosse Doctor Head Lock keeps your stick game-ready and reliable. Fits most 1" diameter sticks and includes self-drilling stainless steel head screws.