One-Hole Lug Compression Connector, Barrel Size Standard, Color Code Gray, Die Code 29, Tongue Angle 90 Degrees Angled, Tongue Width 0.09 in, For Conductor Material Copper, For Stud Size 1/4 in, For Stranded Copper Wire Size - Maximum 4 AWG, Inspection Hole Yes, Hole Center to Center Not Applicable, Material Copper, Maximum Operating Temperature 194 Degrees F, Maximum Voltage 35 kV AC, Standards CSA Certified, UL E9809, Number of Holes 1, Barrel Outside Diameter 0.359 in