3M(TM) Heat Shrink Cable Repair Wrap Sleeve HDCW-55/15-750 This 29.5" (750 mm) sleeve is designed to repair damaged cable jacketing with the Max/Min use range of 2.17"- 0.59" (55-15 mm), with sleeve dimensions for expanded diameter of 2.95" (75 mm) and recovered diameter of 0.51" (13 mm). 600/1000V Conductor Size of 3/0 AWG-400 MCM.