BCTPD500B 19" Standard Double Loop Beaded Polyethylene Reusable Cable Ties, 80 lb Tensile Strength, Black, UV Resistant, 100 Pack 12 10 aWG Their sizes can be determined Their sizes can be determined by the gauge (AWG) of the conducting wire 83") Wire Size: 12 10 AWG Stud Size: 3 4" Color: Yellow Terminal Material: Tin Plated Copper Insulation Material: Nylon Max Electrical Rating: 600 Volts (105oC) Seam: Butted UL Recognized: Yes CE Certified: Yes RoHS Compliant: Yes POLYETHYLENE CABLE TIES: DOUBLE LOOP BEADED REUSABLE SERIES (80LB) The head of these beaded reusable ties has a locking key that allows you to add or reroute cables and wires with ease