Professional Crimping Tool As little pressure as you need to crimp connections with crimper, and theres no need to worry about it breaking or wearing out for a long time. Nothing like the right tool for the job! RATCHETING DESIGN---ADJUSTABLERatcheting mechanism design for insulated terminals crimping tool ensures one-hand operation, and you can control handle crimp strength by adjusting the roulette. Crimping Range AWG22-10The crimping range is AWG22-10, suitable for all kinds of equipment switches, batteries, cars and household, electronic components with pins etc. 700PCS Connectors It comes with a box of 700pcs- 27 types of wire terminals connectors. RED for (0.5-1.5mm /AWG 22-16), BLUE for (1.5-2.5mm /AWG 16-14), YELLOW for (4-6mm /AWG 12-10). As connectors are color coded, you literally load the red connectors into the red labeled crimp on the tool. Yellow in yellow, and blue in blue.