The RC1157 is a vinyl-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 1.09 inches, .38 inches width, maximum insulation .210 inches, bolt hole #10. The terminal is high-conductivity electrolytic copper, electro-tin plated, with color-coded insulation. Vinyl-insulated fork terminals have extra-long PVC insulation sleeves for protection and stress relief at the wire’s flex point. Recommended tool ERG4001.