Upgrade your wiring projects with this 550PCS Heat Shrink Wire Connectors Kit by Twippo, designed for professional performance in automotive, marine, and household applications. With a full assortment of butt, ring, fork, and spade connectors in multiple sizes, this kit ensures secure, waterproof connections every time. ? Package Includes: 550PCS total (see second image for exact quantities) Red (22?16 AWG / 0.5?1.5mm) ? 235 pcs Blue (16?14 AWG / 1.5?2.5mm) ? 235 pcs Yellow (12?10 AWG / 4?6mm) ? 80 pcs Connector types: butt, ring (#10, 1/4", 5/16", 3/8"), fork, and spade ? High-Quality Construction Thick tinned copper core for maximum conductivity and corrosion resistance Provides a tight, reliable crimp without damaging wires Durable enough for professionals, simple enough for beginners ? Waterproof Reliable Double-walled heat shrink tubing with 3:1 shrink ratio Adhesive lining creates a 360 waterproof seal Resists vibration, moisture, salt, and chemicals for long-lasting performance ? Wide Applications Perfect for cars, trucks, motorcycles, boats, trailers, RVs, and scooters Great for home and DIY electrical projects Provides greater pull strength and peace of mind in harsh environments