Why Chanzon t-tap use thicker contacts?
0.8mm thicker contacts will not bend even when tapping into thick wires. Can splice through cable insulation easily to make a good contact.
Why Chanzon choose copper contacts over aluminum?
Copper can transfer electricity more efficiently, more important, copper contacts last longer than their aluminum counterparts
Whats the difference between red, yellow and blue one?
Red is for wire 14-16AWG, blue for 22-16AWG, yellow for 12-10AWG. if you have many different gauge of wires, assortment is a better choice.