The RC1153 is a nylon-insulated fork terminal for wire range #12 - #10 AWG. Fork terminals enable easy installation because the mounting screw does not have to be completely removed. Length 1.00 inches, .37 inches width, maximum insulation .210 inches, bolt hole #10. The terminal is high-conductivity electrolytic copper, electro-tin plated, with color-coded insulation. Recommended tool ERG4001.