Check the listing for details. 112PCS Pre-Insulated Ring Terminals Heat Shrink Waterproof for Boat Auto RV. Condition: New. Listed at 11.99 USD. About this item 🧰【THICKENED RED COPPER】 Crafted from 0.7mm-1mm high-purity red copper to ensure maximum conductivity and a secure crimp that won't crack. Tinned coating provides superior corrosion resistance for harsh environments. 🧰【MARINE GRADE WATERPROOF】 Features a 3:1 shrink ratio with an adhesive-lined double-wall design. When heated, the sealant creates a 360-degree moisture-proof seal, far exceeding traditional crimping methods. 🧰【4 VERSATILE SPECIFICATIONS】 Comprehensive 112pcs kit includes Red (22-16 AWG), Blue (16-14 AWG), and Yellow (12-10 AWG) in stud sizes #10, 1/4", 5/16", and 3/8". 🧰【WIDE APPLICATION】 Reliable performance for boats, motorcycles, vehicles, and home electrical projects. Designed to provide stable voltage and current in high-vibration scenarios.