Thomas & Betts RC717-250 Sta-Kon Ring Terminal Brand: Thomas & Betts. Part Number: RC717-250. Sta-Kon Ring Terminal, Expanded Insulated, Series: RC Series, 12 to 10 AWG Conductor, 1/4 in Stud, 1.16 in Length, Brazed Seam Barrel, Ring Tongue, 0.5 in W x 0.04 in THK Tongue, 600 VAC, 1/4 in Dia Maximum Insulation, 0.27 in Clearance, Vinyl Insulation, 105 deg C, Copper, Tin Coated, Yellow. Additional Description: TB -RC717-250 EXP INS VNL RNG TRM, 12-10, 1/4 BLT 1/4, YEL. Catalog Description: Expanded Vinyl Insulated Ring Terminal, Length 1.16 Inches, Width .50 Inches, Maximum Insulation .250, Bolt Hole #10, Wire Range #12-#10 AWG, Color Yellow, Copper, Tin Plated, 500 Pack..