HellermannTyton Heat Shrink Tube, Black 38mm Sleeve Dia. x 5m Length 2:1 Ratio, TCN20 Series, Shrunk Diameter: 19mm, Material: Cross Linked Polyolefin, Flame Retardant: Yes, MPN: 300-73110 TCN20-38.1/19.1-PO-X-BK