HEAT SHRINK TUBING, 4.75MM ID, PO, BLACK, 100FT, PK25; Shrink Tubing / Boot Colour:Black; Shrink Tubing / Boot Material:PO (Polyolefin); Shrink Ratio:3:1; I.D. Supplied - Metric:4.75mm; I.D. Recovered Max - Metric:1.575mm