The deep-slotted, backed-out terminal screws draw backwire clamps securely over stripped leads for maximum conductivity.; 15 Amp, 125 Volt, NEMA 5-15R, Connector, Straight Blade, Commercial Grade, Rubber, Grounding, Black.; Pack of 100 Pieces. Leviton Commercial and Residential Rubber Grounding Connector 5-15R 18-12 AWG 2 Pole 3 Wire