Aluminum case and rubber end caps make this patch kit durable and waterproof. Synthetic rubber glueless patches conform to inflated tubes and have an aggressive adhesive making them a permanent repair. Patch kit instructions have a self-adhesive backing to serve as emergency tire boot. Stainless steel scuffer. Refill kits and countertop P.O.P. available.Refillable Waterproof CasesMetal kit - anodized aluminium case with 2x rubber caps.Patches that StretchLezyne glueless patches use a specially developed synthetic rubber compound that stretches and conforms to inflated tubes.Useful InstructionsPatch kit instructions have a self-adhesive backing and serve as an emergency tire boot.Reusable ScufferPatch kit include a durable and reusable stainless steel tube scuffer.Tools : Tube Scuffer6x Glueless Patches1x Tire Boot