The Shellback Tactical Helmet Replacement Hardware Kit, 20 or 23 mm is your all-in-one solution for helmet maintenance. It includes four M6 slotted screws, four nuts, and a tube of medium-strength Loctite 242 to lock components in place. With heads that accept a flat-head screwdriver, the kit is designed for simplicity and durability. Choose from sizes: 23 mm (ECH with rails) or 20 mm (ACH with rails). Perfect for field repairs or upgrades.