ILSCO® ClearChoice® Parallel Tap Connector, Lay-In Type GTA, Aluminum/Copper Conductor, 4/0 AWG to 350 kcmil Run/Main Size, 6 AWG to 350 kcmil Tap, 600 VAC, 3/8 in Hex Main, 3/8 in Hex Tap, 90 deg C, Aluminum, Electro-Tin Plated, 2-7/16 in L x 1 in W x 1-11/16 in H