BURNDY® INSULTAP™ Insulation Piercing Connector, Series: BIPC, Aluminum/Copper Conductor, 4/0 AWG to 350 kcmil Conductor, 3/8 in Bolt, 300 VAC, 375 in-lb Installation Torque 9/16 in Socket Size, 90 deg C, Aluminum, Tin Plated, 1.59 in L x 2.5 in W x 3 in H