Feature: The insulated bullet terminal is easy to connect with electrical wire to strengthen its reliability and safety. Male and female wire butt terminal is widely use in the machine, electric power, home appliance, computer or other automatic equipment’s. All insulated electrical rings are nicely enclosed in plastic case for easy access and carry to use: 1. When wiring, just peel off the insulation layer at the end of the wire, and then insert the wire into the male connector. 2. Put the terminal into the clamp groove and press hard to make the wire tightly contact with the butt terminal. 3. Crimp the female connector in the same way, and finally insert the male and female connectors to complete the wiringifications: Terminal Type: Female/Male Bullet Connectors Material: Top Quality Copper, PVC Color: Green, Red, Black, Light Blue, Yellow Size: Male Connectors：25mm*7.6mm Size: Female Connectors：21*4mm Fit Wire Range : AWG 22-16 / 0.5-1.5mm² Plastic Material Thickness: 0.8mm Weight: 100g/boxPackage Included: 20pcs——Green Female / Male 20pcs——Red Female / Male 20pcs——Black Female / Male 20pcs——Light Blue Female / Male 20pcs——Yellow Female / MaleNOTE: 1 best results,We suggest that use with profession crimping tool. 2 small parts out of the reach of children.