HellermannTyton Heat Shrink Tube, Black 12.7mm Sleeve Dia. x 5m Length 2:1 Ratio, TCN20 Series, Shrunk Diameter: 6.4mm, Material: Cross Linked Polyolefin, Flame Retardant: Yes, MPN: 300-73080 TCN20-12.7/6.4-PO-X-BK