HEAT SHRINK TUBING, 12.7MM ID, BLK, 48", PK5; I.D. Supplied - Metric:12.7mm; I.D. Supplied - Imperial:0.5"; I.D. Recovered Max - Metric:6.35mm; I.D. Recovered Max - Imperial:0.25"; Shrink Ratio:2:1; Shrink Tubing / Boot Color:Black