Complete set: Comes with 480 terminals, 30 types of terminals, with male and female circular connectors, male and female lugs, rings, double lugs, connectors, etc... Three colors (red, blue and yellow), depends on the diameter of the wire). You will always find the right connector for any electrical project. Excellent quality: These electrical connectors are made of tinned copper inserts with PVC insulation. Safety and high quality. With a plastic compartment box, each model can be easily checked and repaired. Excellent contacts: the copper core can supply more current and ensure smaller voltage changes, thus avoiding wiring failures and reducing equipment downtime. They can withstand vibration in harsh environments, perfectly isolate and protect electronic connections. Easy to crimp and durable: This wire terminal kit is a variety of crimp connectors. They are easy to use while providing long term performance. The color of the insulating layer matches each color used on most crimping pliers to avoid any mistakes and ensure the best fastening. When properly crimped, your wires will never slip out of these connectors. Wide Applications: It's a handy combination of terminals and connectors for quick electrical repairs. It is an ideal choice for maintenance workshops such as switchboards, garages, electricians, mechanics, automobiles, trucks, motorcycles, etc. Product Manual Kit includes: 40 M4 ring ears (20 red + 20 blue) 50 M5 rings (20 red + 20 blue + 10 yellow) 50 M6 rings (20 red + 20 blue + 10 yellow) 10 M8 rings (10 pieces) yellow) 50 round terminals, (20 red + 20 blue + 10 yellow) 50 round terminals, (20 red + 20 blue + 10 yellow) 50 flat terminals, 250 male (semi-insulated), (20 red + 20 blue + 10 yellow) 50 spade terminals 250 female (semi-insulated), (20 red + 20 blue + 10 yellow) 50 spade terminals 250 female ( fully insulated), (20 red + 20 blue + 10 yellow) 50 butt joints, (20 red + 20 blue + 10 yellow) 30 double spade terminals, (10 red + 10 blue + 10 yellow ) Steps of use: 1. Strip the sheath of the wire. 2. Insert the connector into the appropriate jaws. 3. Insert the wire into the connector. 4. Crimp the connector to firmly secure the wire. horizontal section: Red: 0.5~1.5mm, AWG: 22~16 blue: 1.5~2.5mm, AWG: 16~14 yellow: 4~6mm, AWG: 12~10