Thomas & Betts 54510 Color-Keyed Splice Connector. Color-Keyed Splice Connector, 2-Way Standard Barrel, Copper Conductor, 2/0 AWG Conductor, Die Code: 45, 600 VAC, 0.57 in OD, 1-3/4 in Length, Specifications: Tin Plated, Copper, Black Color Code. Additional Description: TB -54510 2 WAY SPLICE CONNECTOR 2/0 AWG. Catalog Description: Copper Two-Way Splice, Standard Barrel, Max 35kV, Wire Size 2/0 AWG, Tin Plated, Die Code 45, Die Color Code Black.