Product OverviewPremium TC4 Titanium Multi-Tool EDC Ring. The TC4 Titanium Alloy Multi-Tool Knuckle Ring redefines everyday carry versatility.Key Features Aerospace TC4 Titanium: Grade 5 titanium alloy (Ti-6Al-4V) - exceptional strength-to-weight ratio, corrosion-proof, biocompatible Multi-Function Design: Integrated bottle opener, self-defense spike, plus model-specific tools Ultra-Lightweight: Titanium construction delivers full functionality at a fraction of steel weight - comfortable all-day wear CNC Precision Machined: Computer-controlled manufacturing ensures tolerances and ergonomic comfort Corrosion Immune: Titanium never rusts, tarnishes, or corrodes - lifetime durability in any environment TSA-Friendly Profile: Discreet ring design with practical utility functions Specifications Model Model A, Model B, Model C Available Variants 3 Frequently Asked QuestionsIs this titanium bottle opener knuckles a single-finger or multi-finger design?Its form is defined by tc4 alloy multi-tool ring; compare the opening layout and dimensions for fit.How do I choose the right fit for this titanium bottle opener knuckles?Compare the listed finger-opening and overall dimensions with your hand. A comfortable fit should not require forcing your fingers through the openings.Is this titanium bottle opener knuckles better for collecting or display?It works well as an EDC-themed collectible or display piece, especially for buyers who like tc4 alloy multi-tool ring.Which version of this titanium bottle opener knuckles should I choose?The available choices are Model A, Model B, Model C. Choose by the feature named in each option, especially when the option changes the material, set contents, or format.