Full Technical Description: High Copper Alloy Body, Silicon Bronze Bolt/Nut/Lockwasher Material; 2-1/2 Inch; (1) Cable to Flat Surface, Direct Burial Used on; UL 467, CUL Approval; 3/0 AWG Stranded to 250 MCM Conductor Size; 5/8 Inch Bolt Size; 1/4 Inch Bar Thickness; GWL Model